brian bollman:
Lichen on Sandstone
brian bollman:
Hole in Sandstone with Lichen
brian bollman:
Sandstone Comb
brian bollman:
Sandstone Ridges
brian bollman:
Vulture Rock
brian bollman:
Sandstone Cliffs
brian bollman:
Looking North Toward the Sacramento
brian bollman:
Snowy Pine, Mount Diablo
brian bollman:
Mt. Diablo Summit
brian bollman:
Blue Oak Woodland, Mt. Diablo State Park
brian bollman:
Toward Moses Rock Ridge
