Located on the border of Tibet and Nepal, Mount Everest is the tallest mountain in the world. It reaches a height of 8,848 meters above sea level, which is equal to the height of 5.5 miles! Mount Everest was formed because of converging tectonic plates. Tectonic plates are giant slabs of rock that move. Tectonic plates make up the curst, the thinnest layer on Earth. The Indian plate is moving towards the Eurasian plate and that is causing some land to pop up, which are mountains! This process happens over millions of years. That is why Mount Everest has been growing in the past century by about 1 foot. This is what Mount Everest is!