#igneous rock

Granite outcropping, grassy meadows and the Pinnacles. John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Eastern Pinnacles Lakes Basin, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

The eastern side of the Pinnacles is steeper than the western side. Pinnacles Lakes Basin, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Giant frost riven boulder beached like a whale on a meadow. East Pinnacles Creek, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Design in Nature. Pinnacle Lakes Basin, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Slabs of granite, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Big Moccasin Lake, Pinnacles Lakes Basin, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Geology. Pinnacles Lakes Basin, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Geology. John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

East Pinnacles Lakes Basin geology. John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

Geo dumps, filled with broken rocks. Pinnacles Lakes Basin, John Muir Wilderness, Sierra Nevada Mountains, California, USA. Photo by Van Miller

A network of intruded mineral vein in a coherent facies of ryolite lava.  This picture ca. 40 cm wide.   鉱物脈