Horse Flats Main Area (East)

This is the most dense collection of boulders in the San Gabriel Mountain range. With over 150 problems with grades ranging from VB to V11, there's something here for everyone.

Problems: 160+ (as of Dec. 2025)

Directions

If you are walking from the campground this is everything on the right side of the main trail. The East Side (right of the trail) is the larger of the two Main Areas.