volcanic+tufa
71inorganic matter — (New American Roget s College Thesaurus) The inanimate world Nouns 1. inorganic matter, mineral, mineral world or kingdom, unorganized, inanimate, or lifeless matter, inorganization; lithification, petrification; petrifaction; brute matter; stone …
72Manzanar — See also: Manzanar, California Manzanar War Relocation Center …
73St. Peter's Basilica — Papal Basilica of Saint Peter Basilica Papale di San Pietro in Vaticano (Italian) Basilica Sancti Petri (Latin) …
74Ansel Adams Wilderness — IUCN Category Ib (Wilderness Area) Banner Peak above Thousand …
75Bodie, California — Bodie   Ghost town   …
76Muir Woods National Monument — IUCN Category III (Natural Monument) Sunlight shining through redwood trees at the Muir Woods Nationa …
77Angel Island (California) — Angel Island Angel Island Geography Location San Francisco Bay Coordinates …
78Hearst Castle — Hearst San Simeon Estate U.S. National Register of Historic Places U.S. National Historic Landmark …
79California Water Wars — The California Water Wars describes the disputes between Los Angeles, California and the Owens Valley over water rights. The disputes stem from Los Angeles s location in a semi arid area, and the availability of water from Sierra Nevada runoff in …
80Channel Islands National Marine Sanctuary — Lichen encrusted rocks adorn the cliffs of Santa Cruz Island …