You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Q: Category: MOUNTAINS 
Clue: To trek through its Khumbu Icefall, Lhotse Face & South Col, your team needs a $70,000 permit from Nepal's government
A: 
mount everest