East Bay Regional Park District

source · source-ebrpd-black-diamond-park-page

Original source: East Bay Regional Park District

Claims and evidence

Site inventory

Star mine
Site id
group-camp-black-diamond-star-mine
Maximum people
35
Maximum nights
2
Maximum cars
8
Picnic tables
Yes
Pit toilet
Yes
Water available
No
Minimum advance business days
3
Stewartville
Site id
backpack-camp-black-diamond-stewartville
Maximum people
20
Maximum nights
2
Hike in distance miles
3.2
Picnic tables
Yes
Pit toilet
Yes
Water
non potable treat before human use
Minimum advance business days
2
Evidence and sources (1)

No claim effective interval recorded.

Spatial scope IDs: scope-black-diamond-mines-regional-preserve

  1. Evidence stance: supports · Evidence details

    Evidence notes: Official park camping details.

    Star Mine is an organized educational group camp for up to 35, two-night maximum, eight cars, picnic tables, pit toilet, no water, and three-business-day booking. Stewartville holds 20, is 3.2 miles from headquarters, has picnic tables, pit toilet and non-potable horse water, a two-night maximum, and two-business-day booking.

    Publisher
    East Bay Regional Park District
    Observer / attribution
    Wayproof web source review
    Observed at
    Unknown
    Retrieved at
    2026-09-22T00:00:00-07:00

    Retrieval time does not establish when an event occurred.

    Observation details · Source details · Original source: East Bay Regional Park District

    Recorded artifact references
    • Camping

    References are not a confirmation of current availability.

Visitor profile

Acreage
8533
Address
5175 Somersville Road, Antioch, CA 94509
Camping
Star mine group camp
Capacity
35
Minimum advance business days
3
Pit toilet
Yes
Water
No
Stewartville backpack camp
Capacity
20
Distance from headquarters miles
3.2
Minimum advance business days
2
Pit toilet
Yes
Water
non-potable horse water; treat for human use
Mine access
Beyond the visitor center only through the Coal Mine Experience; minimum age 7
Parking fee condition
when kiosk is attended; seasonal weekends and some holidays
Parking fee usd
5
Seasonal gate hours
08:00 opening; closing varies from 17:00 to 20:00 by published date bands
Evidence and sources (1)

No claim effective interval recorded.

Spatial scope IDs: scope-black-diamond-mines-regional-preserve

  1. Evidence stance: supports · Evidence details

    Evidence notes: Direct transcription and conservative structuring of planning-relevant fields from the official park page.

    The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.

    Publisher
    East Bay Regional Park District
    Observer / attribution
    Wayproof live source review
    Observed at
    Unknown
    Retrieved at
    2026-09-20T07:00:00+00:00

    Retrieval time does not establish when an event occurred.

    Observation details · Source details · Original source: East Bay Regional Park District

    Recorded artifact references
    • Overview
    • To Reach The Park
    • Attractions

    References are not a confirmation of current availability.

Recorded observations

Browse observations separately (2)

Star Mine is an organized educational group camp for up to 35, two-night maximum, eight cars, picnic tables, pit toilet, no water, and three-business-day booking. Stewartville holds 20, is 3.2 miles from headquarters, has picnic tables, pit toilet and non-potable horse water, a two-night maximum, and two-business-day booking.

Publisher
East Bay Regional Park District
Observer / attribution
Wayproof web source review
Observed at
Unknown
Retrieved at
2026-09-22T00:00:00-07:00

Retrieval time does not establish when an event occurred.

Observation details · Source details · Original source: East Bay Regional Park District

Recorded artifact references
  • Camping

References are not a confirmation of current availability.

The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.

Publisher
East Bay Regional Park District
Observer / attribution
Wayproof live source review
Observed at
Unknown
Retrieved at
2026-09-20T07:00:00+00:00

Retrieval time does not establish when an event occurred.

Observation details · Source details · Original source: East Bay Regional Park District

Recorded artifact references
  • Overview
  • To Reach The Park
  • Attractions

References are not a confirmation of current availability.

Published record history

History lists published operations; it does not reconstruct removed content or confirm that external media remains available.

JSON

Historical evidence is not a guarantee of current conditions.