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Pinnacles National Monument, located near the San Andreas Fault along the boundary of the Pacific Plate and the North American Plate, is an excellent example of tectonic plate movement. The Pinnacles Rocks are believed to be part of the Neenach Volcano that occurred 23 million years ago near present-day Lancaster, California, some 195 miles (314 km) southeast. The giant San Andreas Fault split the volcano and the Pacific Plate crept north, carrying the Pinnacles. The work of water and wind on these erodible volcanic rocks has formed the unusual rock structures seen today. Fault action and earthquakes also account for the talus caves that are another Pinnacles attraction. Deep, narrow gorges or shear fractures were transformed into caves when huge boulders toppled from above, and wedged in the fractures before reaching the ground. These boulders became the ceilings of the talus caves that now entice not only people, but also several kinds of bats.

De gratis high-resolution foto van boom, Bos, rots, wildernis, berg-, heuvel, avontuur, vallei, bergketen, oerwoud, park, Nationaal Park, nok, geologie, rotsklimmen, vegetatie, regenwoud, plateau, leefgebied, ecosysteem, greatcaliforniahikes, pinakels, pinnaclesnationalpark, volcanicregionofcalif, vulkanen, remnentvolcanos, hikingthepinnacles, biome, natuurlijke omgeving, geografisch kenmerk, bergachtige landforms

, genomen met een iPod touch 01/22 2017 De foto genomen met 4.0mm, f/2.4s, 1/651s, ISO 32