Try Morgan Territory Regional Preserve http://www.ebparks.org/parks/morgan (North of Livermore, few people) or

http://www.openspace.org/preserves/pr_purisima.asp Purisima Creek Redwoods Open Space Preserve (creek side in the woods, you may find some spots not seeable from the trail).

For safety, probably 3-5 people group is deal.  Good luck.

[此贴子已经被作者于2008-3-9 13:49:21编辑过]