Mount Shasta sees many climbers annually attempt to make it to the summit. The summer climbing season runs from late April until October, although many attempts are made in the winter. The most popular route is Avalanche Gulch, also known as the John Muir Route. It begins at a Sierra Club cabin known as Horse Camp, at elevation 7,900 ft (2,400 m) on the southwest side of the mountain, near tree line. It involves 6,300 ft (1,900 m) of vertical gain over moraines and snowfields, with some danger from rockfall and a bergschrund.[3] Because Mount Shasta is a very popular mountain for climbers in the summertime, it sees many inexperienced climbers who become in need of rescue. Hiking trails also exist in areas around the base of the mountain.[3]