Recorded for: Convict Lake Loop
- Bidirectional
- Yes
- Distance basis
- sum of selected USGS source-field lengthmiles values
- Geometry snapshot
- Path
- geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojson
- Sha256
- b5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
- One way distance miles
- 1.96900273
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
A bounded National Digital Trails query returned connected USFS-originated, distance-bearing features for Parker Lake and Heart Lake, plus an approximately two-mile named Convict Lake Loop shore-trail component whose endpoints do not close. Fourteen selected public-domain features are retained in a versioned snapshot.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojsonb5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
References are not a confirmation of current availability.
Recorded for: Convict hiker parking connector
- Coordinate reference system
- EPSG:4326
- Dataset feature id
- {1E376791-F6EC-4A16-8996-31C6975B4A6E}
- Dataset feature name
- CONVICT HIKER PARKING
- Distance miles
- 0.44399712
- Distance status
- known
- End coordinate
- Latitude
- 37.594313472938715
- Longitude
- -118.85592573184694
- Geometry snapshot
- Feature id
- convict-hiker-parking-connector
- Path
- geometry/v0/snapshots/eastern-sierra-access-connectors-20260925.geojson
- Sha256
- bd479aa6c98a9ee32914499758ff0951e0730b025cc113a937e2a2f53e07c972
- Joins route node id
- route-node-convict-lake-loop-02
- Start coordinate
- Latitude
- 37.60014790176818
- Longitude
- -118.85384088423861
- Surface
- unpaved native
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The National Digital Trails service publishes the named CONVICT HIKER PARKING feature as a 0.44399712-mile unpaved-native trail. Its south endpoint exactly matches the shared endpoint of reviewed Convict Lake Loop segments 2 and 3.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T19:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/eastern-sierra-access-connectors-20260925.geojsonbd479aa6c98a9ee32914499758ff0951e0730b025cc113a937e2a2f53e07c972
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop segment 1
- Coordinate reference system
- EPSG:4326
- Dataset feature id
- {53DFF737-6342-48C7-BF01-418FFE3DFB23}
- Dataset feature name
- CONVICT LAKE LOOP
- Dataset field
- lengthmiles
- Distance miles
- 0.041122040000000006
- Distance status
- known
- End coordinate
- Latitude
- 37.59507038047492
- Longitude
- -118.85349315027948
- Geometry snapshot
- Feature id
- {53DFF737-6342-48C7-BF01-418FFE3DFB23}
- Path
- geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojson
- Sha256
- b5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
- Route role
- official mainline
- Source dataset id
- {8CC4DB36-D0BE-4189-88C7-64C3569EB754}
- Source edit date
- 1774742400000
- Source feature id
- 5830
- Source load date
- 1777310283000
- Source originator
- U.S. Forest Service
- Start coordinate
- Latitude
- 37.5950547846918
- Longitude
- -118.85276363557385
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
A bounded National Digital Trails query returned connected USFS-originated, distance-bearing features for Parker Lake and Heart Lake, plus an approximately two-mile named Convict Lake Loop shore-trail component whose endpoints do not close. Fourteen selected public-domain features are retained in a versioned snapshot.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojsonb5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop segment 2
- Coordinate reference system
- EPSG:4326
- Dataset feature id
- {A5B32BDD-4414-4528-A8C6-CA291B26CE61}
- Dataset feature name
- CONVICT LAKE LOOP
- Dataset field
- lengthmiles
- Distance miles
- 0.14486553000000002
- Distance status
- known
- End coordinate
- Latitude
- 37.594313472938715
- Longitude
- -118.85592573184694
- Geometry snapshot
- Feature id
- {A5B32BDD-4414-4528-A8C6-CA291B26CE61}
- Path
- geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojson
- Sha256
- b5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
- Route role
- official mainline
- Source dataset id
- {8CC4DB36-D0BE-4189-88C7-64C3569EB754}
- Source edit date
- 1774742400000
- Source feature id
- 5830
- Source load date
- 1777310283000
- Source originator
- U.S. Forest Service
- Start coordinate
- Latitude
- 37.59507038047492
- Longitude
- -118.85349315027948
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
A bounded National Digital Trails query returned connected USFS-originated, distance-bearing features for Parker Lake and Heart Lake, plus an approximately two-mile named Convict Lake Loop shore-trail component whose endpoints do not close. Fourteen selected public-domain features are retained in a versioned snapshot.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojsonb5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop segment 3
- Coordinate reference system
- EPSG:4326
- Dataset feature id
- {BA0FC189-FEC3-4F4F-88BA-C4C4ADFB6CC8}
- Dataset feature name
- CONVICT LAKE LOOP
- Dataset field
- lengthmiles
- Distance miles
- 0.7182946400000001
- Distance status
- known
- End coordinate
- Latitude
- 37.58773640600552
- Longitude
- -118.86553319728223
- Geometry snapshot
- Feature id
- {BA0FC189-FEC3-4F4F-88BA-C4C4ADFB6CC8}
- Path
- geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojson
- Sha256
- b5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
- Route role
- official mainline
- Source dataset id
- {8CC4DB36-D0BE-4189-88C7-64C3569EB754}
- Source edit date
- 1774742400000
- Source feature id
- 5830
- Source load date
- 1777310283000
- Source originator
- U.S. Forest Service
- Start coordinate
- Latitude
- 37.594313472938715
- Longitude
- -118.85592573184694
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
A bounded National Digital Trails query returned connected USFS-originated, distance-bearing features for Parker Lake and Heart Lake, plus an approximately two-mile named Convict Lake Loop shore-trail component whose endpoints do not close. Fourteen selected public-domain features are retained in a versioned snapshot.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojsonb5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop segment 4
- Coordinate reference system
- EPSG:4326
- Dataset feature id
- {65CCBD07-6F11-41EC-9E7C-82B6776D9D0B}
- Dataset feature name
- CONVICT LAKE LOOP
- Dataset field
- lengthmiles
- Distance miles
- 0.13874447
- Distance status
- known
- End coordinate
- Latitude
- 37.585917703787004
- Longitude
- -118.86499120844759
- Geometry snapshot
- Feature id
- {65CCBD07-6F11-41EC-9E7C-82B6776D9D0B}
- Path
- geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojson
- Sha256
- b5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
- Route role
- official mainline
- Source dataset id
- {8CC4DB36-D0BE-4189-88C7-64C3569EB754}
- Source edit date
- 1774742400000
- Source feature id
- 5830
- Source load date
- 1777310283000
- Source originator
- U.S. Forest Service
- Start coordinate
- Latitude
- 37.58773640600552
- Longitude
- -118.86553319728223
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
A bounded National Digital Trails query returned connected USFS-originated, distance-bearing features for Parker Lake and Heart Lake, plus an approximately two-mile named Convict Lake Loop shore-trail component whose endpoints do not close. Fourteen selected public-domain features are retained in a versioned snapshot.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojsonb5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop segment 5
- Coordinate reference system
- EPSG:4326
- Dataset feature id
- {13757B59-22A9-44C7-8D12-03EC877271DD}
- Dataset feature name
- CONVICT LAKE LOOP
- Dataset field
- lengthmiles
- Distance miles
- 0.92597605
- Distance status
- known
- End coordinate
- Latitude
- 37.58914937464098
- Longitude
- -118.8543469528832
- Geometry snapshot
- Feature id
- {13757B59-22A9-44C7-8D12-03EC877271DD}
- Path
- geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojson
- Sha256
- b5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
- Route role
- official mainline
- Source dataset id
- {8CC4DB36-D0BE-4189-88C7-64C3569EB754}
- Source edit date
- 1774742400000
- Source feature id
- 6100
- Source load date
- 1777310283000
- Source originator
- U.S. Forest Service
- Start coordinate
- Latitude
- 37.585917703787004
- Longitude
- -118.86499120844759
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
A bounded National Digital Trails query returned connected USFS-originated, distance-bearing features for Parker Lake and Heart Lake, plus an approximately two-mile named Convict Lake Loop shore-trail component whose endpoints do not close. Fourteen selected public-domain features are retained in a versioned snapshot.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-eastern-sierra-foliage-routes-20260924.geojsonb5f952648b55904717bd3279ec70ef0d6b8d590049a061ef4a16969428bb4c9f
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop north trailhead road link
- Distance derivation
- reviewed source geometry measured geodesically
- Distance miles
- 0.06898757
- Distance status
- geometry derived
- End coordinate
- Latitude
- 37.5950547846918
- Longitude
- -118.85276363557385
- Geometry snapshot
- Feature id
- route-segment-convict-lake-loop-east-north-road-link
- Path
- geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
- Sha256
- f1dadc4b81c810fa88cd0b5104248a4cf3288f5ef34b0a1245b0310bce25ad5e
- Route role
- east shore north road connection
- Start coordinate
- Latitude
- 37.59462220472
- Longitude
- -118.85175619577528
- Surface
- road
Evidence and sources (2)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The official Forest Service Convict Lake hiking map depicts a continuous dotted hiking route around the lake. The retained south-shore trail reaches the road and cul-de-sac on the lake's east side; the mapped loop follows a road connection, returns to an east-side lakeshore trail, and then uses another road connection through the boat-ramp and trailhead-parking area to rejoin the retained north-shore trail. The map does not publish individual leg mileages or reusable line geometry for these three mixed-surface connections.
- Publisher
- USDA Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T10:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: USDA Forest Service
Evidence stance: supports · Evidence details
The July 2026 USGS Transportation service returns the Convict Lake Road and Boat Launch road features plus a paved 0.34564349-mile CONVICT LAKE VIS trail. Their geometry matches the road-trail-road loop closure depicted by the official Forest Service hiking map. The south road feature intersects the paved trail endpoint within 0.4 meter; the north road and retained trail endpoints match within approximately 1.4 meters.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T11:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop east-side lakeshore trail
- Distance miles
- 0.3459521
- Distance status
- source published dataset length
- End coordinate
- Latitude
- 37.59462220472
- Longitude
- -118.85175619577528
- Geometry snapshot
- Feature id
- route-segment-convict-lake-loop-east-shore-trail
- Path
- geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
- Sha256
- f1dadc4b81c810fa88cd0b5104248a4cf3288f5ef34b0a1245b0310bce25ad5e
- Route role
- east shore lakeshore trail
- Source feature id
- {03B23C3E-B3C4-4466-88C4-D794CF42ACA4}
- Source feature name
- CONVICT LAKE VIS
- Start coordinate
- Latitude
- 37.59027930167576
- Longitude
- -118.85298200177768
- Surface
- paved trail
Evidence and sources (2)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The official Forest Service Convict Lake hiking map depicts a continuous dotted hiking route around the lake. The retained south-shore trail reaches the road and cul-de-sac on the lake's east side; the mapped loop follows a road connection, returns to an east-side lakeshore trail, and then uses another road connection through the boat-ramp and trailhead-parking area to rejoin the retained north-shore trail. The map does not publish individual leg mileages or reusable line geometry for these three mixed-surface connections.
- Publisher
- USDA Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T10:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: USDA Forest Service
Evidence stance: supports · Evidence details
The July 2026 USGS Transportation service returns the Convict Lake Road and Boat Launch road features plus a paved 0.34564349-mile CONVICT LAKE VIS trail. Their geometry matches the road-trail-road loop closure depicted by the official Forest Service hiking map. The south road feature intersects the paved trail endpoint within 0.4 meter; the north road and retained trail endpoints match within approximately 1.4 meters.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T11:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop south cul-de-sac road link
- Distance derivation
- reviewed source geometry measured geodesically
- Distance miles
- 0.11488317
- Distance status
- geometry derived
- End coordinate
- Latitude
- 37.59027930167576
- Longitude
- -118.85298200177768
- Geometry snapshot
- Feature id
- route-segment-convict-lake-loop-east-south-road-link
- Path
- geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
- Sha256
- f1dadc4b81c810fa88cd0b5104248a4cf3288f5ef34b0a1245b0310bce25ad5e
- Route role
- east shore south road connection
- Start coordinate
- Latitude
- 37.58914937464098
- Longitude
- -118.8543469528832
- Surface
- road
- Turnaround arm selection
- shorter of two nearly equal mapped road arms
Evidence and sources (2)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The official Forest Service Convict Lake hiking map depicts a continuous dotted hiking route around the lake. The retained south-shore trail reaches the road and cul-de-sac on the lake's east side; the mapped loop follows a road connection, returns to an east-side lakeshore trail, and then uses another road connection through the boat-ramp and trailhead-parking area to rejoin the retained north-shore trail. The map does not publish individual leg mileages or reusable line geometry for these three mixed-surface connections.
- Publisher
- USDA Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T10:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: USDA Forest Service
Evidence stance: supports · Evidence details
The July 2026 USGS Transportation service returns the Convict Lake Road and Boat Launch road features plus a paved 0.34564349-mile CONVICT LAKE VIS trail. Their geometry matches the road-trail-road loop closure depicted by the official Forest Service hiking map. The south road feature intersects the paved trail endpoint within 0.4 meter; the north road and retained trail endpoints match within approximately 1.4 meters.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T11:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop
- Distance miles
- 2.49882557
- Distance status
- mixed source published and geometry derived
- Route shape
- loop
- Segment ids
- route-segment-convict-lake-loop-01
- route-segment-convict-lake-loop-02
- route-segment-convict-lake-loop-03
- route-segment-convict-lake-loop-04
- route-segment-convict-lake-loop-05
- route-segment-convict-lake-loop-east-south-road-link
- route-segment-convict-lake-loop-east-shore-trail
- route-segment-convict-lake-loop-east-north-road-link
- Start node id
- route-node-convict-lake-loop-east
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The July 2026 USGS Transportation service returns the Convict Lake Road and Boat Launch road features plus a paved 0.34564349-mile CONVICT LAKE VIS trail. Their geometry matches the road-trail-road loop closure depicted by the official Forest Service hiking map. The south road feature intersects the paved trail endpoint within 0.4 meter; the north road and retained trail endpoints match within approximately 1.4 meters.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T11:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson
References are not a confirmation of current availability.
Recorded for: Convict hiker parking connector
- Distance miles
- 0.44399712
- Distance status
- known
- Segment ids
- route-segment-convict-hiker-parking-connector
- Start node id
- access-convict-hiker-parking
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The National Digital Trails service publishes the named CONVICT HIKER PARKING feature as a 0.44399712-mile unpaved-native trail. Its south endpoint exactly matches the shared endpoint of reviewed Convict Lake Loop segments 2 and 3.
- Publisher
- U.S. Geological Survey / U.S. Forest Service
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-25T19:00:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: U.S. Geological Survey / U.S. Forest Service
Recorded artifact references
geometry/v0/snapshots/eastern-sierra-access-connectors-20260925.geojsonbd479aa6c98a9ee32914499758ff0951e0730b025cc113a937e2a2f53e07c972
References are not a confirmation of current availability.
Recorded for: Convict Lake Loop
- Round trip miles
- 2
- Route description
- hike around Convict Lake
- View context
- lake and Mount Morrison
Evidence and sources (1)
No claim effective interval recorded.
Spatial scope IDs: scope-route-convict-lake-loop
Evidence stance: supports · Evidence details
The Inyo visitor guide recommends a two-mile hike around Convict Lake for views of the lake against Mount Morrison.
- Publisher
- USDA Forest Service, Inyo National Forest
- Observer / attribution
- Not recorded
- Observed at
- Unknown
- Retrieved at
- 2026-09-24T07:30:00+00:00
Retrieval time does not establish when an event occurred.
Observation details · Source details · Original source: USDA Forest Service, Inyo National Forest