Mount Everest's Height Increases Due to Geologic Activity

The formation of the Himalayas is attributed to the collision of the Indian subcontinent with the Eurasian tectonic plate approximately 50 million years ago. This process continues to this day, causing the mountain range to rise, albeit at a rate of 1-2mm per year. However, landslides and erosion also contribute to the loss of rock and soil, resulting in a net gain in height for some peaks, including Mount Everest. Specifically, the Arun river basin, located 75km away, is eroding rock and soil, causing Everest to rise by up to 2mm per year. This phenomenon is not unique to Everest, as the surrounding landscape's shifting contours also contribute to the mountain's growth.