Pioineer Basin, John Muir Wilderness, CA













  Pioneer Basin
  Trail

  John Muir Wilderness

Pioneer Basin, 2nd Lake


Hiking the Trail to Hilton Lakes

Ruby Lake, John Muir Wilderness, CA

Ruby Lake


Mosquito Flat to Mono Pass,
3.5 miles

The trail from Mosquito Flat begins climbing almost immediately, traversing 2 miles up the hillside to the Ruby Lake trail junction. Fill up with water there before beginning the long, exposed series of switch-backs to the top of the pass.

Camping is possible at Ruby Lake for those who make a late start and wisely want to save the final push up Mono Pass for the cool of the morning.

Mono Pass, John Muir Wilderness, CA

Mono Pass and Summit Lake


Mono Pass to Pioneer Basin
4.5 miles

At the top of the pass the trail crosses into a broad, barren valley. Filtered water from Summit Lake can be used to renew supplies. The trail descends across an open hillside with panoramic views of the Mono Creek watershed.

After nearly 2 miles, Trail Lakes appear below. They are a good source of water. Camping is possible there. Beyond the lakes the trail descends to Golden Creek, crosses, and continues downhill to the junction of the Pioneer Basin trail. One mile of uphill carries you to the lowest of the Pioneer Basin lakes and a good campsite.