Tourism is creating other problems for the local environment, too, including increased population density, over-dependence on wood as a fuel and construction source and the overgrazing and cutting of mountain slopes to feed livestock.

BBC: Everest's growing problem

Local Government Association (LGA) research suggests that one-in-three councils are worried about the density of fast food outlets.

BBC: Town halls call for more power over High Streets

The site has a very low human density with less than 100, 000 inhabitants, and has suffered economically and socially from the closing of local mining and textile industries.

UNESCO: EDUCATION