Mt Everest is made up of a variety of different rocks including sandstone, siltstone, sedimentary rock, granite and metamorphic rock. The mountain is comprised of three different formations, which make up the geology of the area; these are called the Rongbuk Formation, the North Col Formation and the Qomolangma Formation.
Mt Everest is known for being the tallest mountain standing at 29,035 feet high. Engineers from the Massachusetts Institute of Technology created a high-tech lightweight radar device that was carried to the top of the mountain to measure the exact height underneath all of the snow. GPS technology was also deployed near the top of the mountain to provide elevation information.