World Mountains day Mountains are home of the 15% of the world´s population and a quarter of the world’s land animals and plants. They provide freshwater for everyday life to half of humanity. Mountains cover 27% of the Earth’s land surface. I live on a Mountain- they are great! Tell us what you love about Mountains on World Mountain Day :) For more info visit: https://www.un.org/en/observances/mountain-day Booking for this event has now closed.