Complex sentence: The hut is often used as a base for alpine climbing on Mount Victoria (Alberta) and Mount Lefroy (both over 3350 metres/11,000 feet), and as a destination in itself for ambitious hikers.
Split into simpler sentences: The hut is used as a base for alpine climbing on Mts. Victoria and Lefroy (both over 3350 metres/11,000 feet), and as a destination in itself for ambitious hikers.