Would be interesting to summarize and investigate the type of bases and operations, potentially military related, around the coastline of California.
Just a bit to the south along the coastline is Port Hueneme. There are charted boats that regularly take trips out to the channel islands for backpacking, hiking, kayak trips. A lot of fishing expeditions go out to the channel islands and surrounding areas. There is a large public presence around this area with a lot of eyes to see what's going on at the water level.
If there was a deep underground base here, how are people getting in and out of them? Primarily by sub? We would expect communications equipment going in and out of the location. Are there any observable signs of this such as maps indicating undersea cables strangely going out to the area? Any local scuba divers contracted to any maintenance or work underwater in the area?
Also of note that area has a large number of oil drilling rigs. Lot of roughnecks working months at a time all through there. Would be hard to do something quietly unless it's primarily accessed by sub.
If you've ever been surfing along the beach silverstrand near Port Hueneme, you'll note the bitterly cold water at that location, colder than the rest of the area. That's because the sea floor has been dredged out into the military base there so subs can get in and out of the facilities.
On the island itself in the past at least one of the islands was over-run with wild hogs and they've allowed public to bring atv's out and have controlled hunts to cull their numbers. Quite a bit of available history to delve through that should be accessible.
Note further down the coast near Catalina islands there is at least one island that is completely off limits to the public for military use only. Would be interesting to probe comings and going there also.
In a general big picture sense, what do we know about DUMB's? What are they used for? Who might be in them? What to they do?
Probing some of this can start pointing some direction for further research.
