Slightly off topic, but any idea where I might find any of the Union Mattole Oil Company well-heads that were apparently abandoned in place? https://ohp.parks.ca.gov/?page_id=21420 (No. 543)

From the very limited information I've found they were somewhere along/above the North Fork, maybe somewhere near the underground Scientology base? The name of "Oil Ridge" seems like it might be related. There are a lot of private parcels up there though and I don't want to trespass :)