posted on Jul, 24 2007 @ 09:06 PM
There are old persistent rumors of an underground base accessible by submarine, where secret research is conducted. But I don't buy into that theory
Geologically, the Channel Islands are just an extension of the other southern California mountain ranges, and like them are too unstable, fractured,
and seismically active for any really large underground facilities. There maybe a few small rooms underground, but certainly no 'football stadium'
sized excavations or cavernous openings.