Fenced in

From Austin Explorer's log of Mare Island San Pablo Bay Trail

The chain-link fence with barbed wire near the trailhead is not particularly inviting, but you won't give it much thought when you get to the bay.

Recommended Item

Best Easy Day Hikes San Francisco's North Bay (Best Easy Day Hikes Series)
Tracy Salcedo
Your price: $9.95

This guide features twenty-two of the best short hikes in San Francisco's North Bay. Accurate maps and detailed directions make this pocket-sized handbook both easy to use and authoritative.