The collision crumpled the landscape, raising mountains along some 1,5000 miles, a range we know as the Himalaya. Rising at the border of Tibet and Nepal, Mount Everest formed from a tectonic smashup between the Indian and Eurasian tectonic plates tens of millions of years ago. In others, they collide, shoving mountains into the sky. In some places, the plates pull apart, creating valleys in the land. ![]() These plates continually jockey for position, shaping the array of features visible at the surface. The rocks arrived at this surprising spot, nearly 30,000 feet above sea level, due to the slow march of tectonic plates, slabs of solid rock that make up our planet’s fractured outer shell. Climbers who make it to the top of Mount Everest may not know it, but under the snowpack sits an expanse of mottled gray rocks that once lay on the ocean floor.
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