Mystery Mountain: Why does Mount Everest make seriously terrifying sounds at night?
After sunset, Mount Everest's surrounding high-altitude glaciers erupt with loud noises. A groundbreaking study by glaciologist Evgeny Podolskiy and his team has found that the glaciers' chorus of spooky noises is because of significant dips in temperature after dusk, which cause ice to shatter
Source: firstpost.com