Geography Franktown Cave
the cave created when water eroded soft, water soluble layers of dawson arkose formation through seeps below thick, hard shelf of castle rock conglomerate. area provides 2 key raw materials used tool-making:
microcrystalline rock in white chalcedony, light yellow , caramel formed petrified wood during paleocene period. projectile points , small bifaces made microcrystalline rock.
wall mountain tuff rhyolite oligocene age flake tools.
near rock shelter, spring-fed streams traverse land of scrub oak, plains grassland , open ponderosa pine forest.
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