
Osborn(e) Bank Caves (225 fsw)
The original plan was to dive the USS Burns on Sept 2, 2020. Alas, it was not to be. Two days before our scheduled trip, the military shut down access to that part of San Clemente island. We consid…

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
I suspect that none of the caves on your list have public diver accessHall City
Devils Den
Black Chasm
I suspect California Caverns but not certain.
Allegedly some in Kings Canyon / Sequoia NP
And at least one more well known one
Edit: there’s a cave called “Vanishing River” in Santa Cruz but good luck getting access. I don’t actually know if there’s diving there but the name is promising and there is extensive mapped passage.
I suspect that none of the caves on your list have public diver access![]()
Been awhile since I saw that video. That actually looks granitic to me not sedimentary/limestone. I have to say their definition of "heavy sediment" is different than mine lol.Hall City is open as far as I know. It does require some work to get to.
To get information and access to cave dive anywhere west coast (or really anywhere in north america outside of the tourist spots in FL or MX) you need to invest in developing relationships with land managers, your local grotto(s), and dry cavers.I suspect that none of the caves on your list have public diver access![]()
Been awhile since I saw that video. That actually looks granitic to me not sedimentary/limestone. I have to say their definition of "heavy sediment" is different than mine lol.
To get information and access to cave dive anywhere west coast (or really anywhere in north america outside of the tourist spots in FL or MX) you need to invest in developing relationships with land managers, your local grotto(s), and dry cavers.