Stumbled into this Youtube video about the BlackRock Mtn SP Campground. At about the 7 minute point, he begins a drive thru and show the various segments on a map, it would be extremely helpful to anyone trying to decide if then can get up there and stay.
https://youtu.be/4eP0FedbL6A
This is an overview of the entire park.....
https://youtu.be/S5RWvm3kiN0
In this video, the same Youtuber, he shows the drive up into the park.....
https://youtu.be/h6vyNBi1BzY
This is a very prolific Youtuber and there are several videos each focusing on about three sites each.
This link should show you all of the Youtubers Black Rock Mtn SP videos.....
https://www.youtube.com/@KempOutside...=Black%20Rock.
Here is another good drive thru and commentary by another Youtuber
https://youtu.be/9vxXF42AYXg
Charles