If you drive all the way to the Southeast corner of the abandoned naval base there are some hiking trails maintained by a bunch of interesting folk sort of squatting out there as docents. Bizarre interpetive center out of a Peewee Herman movie. Killer views of the Al Zampa Memorial Bridge across the Carquinez Straits. Overgrown trails lit at night with weird strands of christmas lights and Solar powered landscape lamps. Some history as well! Two thumbs up.