Skip to main content
  • Find Your Adventure
    • Hiking + Backpacking
    • Camping
    • Parks + Wilderness Areas
    • Special Destinations
    • Ocean Beaches + Shores
    • Canoeing, Kayaking + SUP (Flatwater)
    • Snowshoeing + Microspikes
    • Swimming Holes
    • Mountain Biking
    • Mountaineering
    • Backcountry Skiing + Splitboarding
    • Lodging
    • Hot Springs
    • Cross-country Skiing
    • Rafting + Kayaking (Whitewater)
    • Wildlife Viewing
  • Travel
    • Top Picks
    • Road Trips
    • Itineraries
  • Video
  • Articles
    • Stories
    • News + Events
    • Conservation + Nature
    • Tips, Tricks + How-to
    • Leave No Trace
  • Become a Contributor
Home
Sign In

Outdoor Project

The ultimate adventure guide

Aron Bosworth
Winds batter the summit of Mount Diller seen here from Lassen Volcanic National Park's southwest entrance.
Aron Bosworth
Mount Diller's east ridge provides the most direct route to the summit. Brokeoff Mountain (9,235') rises in the distance.
Aron Bosworth
Alpenglow lights up Mount Diller's south face.
Aron Bosworth
Heading up to the Mount Diller - Pilot Pinnacle saddle.
Aron Bosworth
Diller's east ridge.
Aron Bosworth
Ascending the east ridge of Mount Diller.
Aron Bosworth
A final bootpack finishes up the climb to Diller's summit ridge.
Reed Youngbar
Lassen Peak (10,457') rises above all.
Aron Bosworth
Diller's summit ridge with Mount Shasta (14,197') in view.
Reed Youngbar
Dropping into the southwest chute.
Reed Youngbar
March corn conditions make for fun skiing in the southwest chute.
Reed Youngbar
Diller's southwest chute and the lower slopes above Ridge Lakes.
Aron Bosworth
Turns in the southwest chute.
Aron Bosworth
Navigating chunder on Diller's lower slopes.
Aron Bosworth
Access to Mount Diller begins along the Lassen Park Road (Highway 89), unplowed and open to skiers and snowshoers in winter.
Aron Bosworth
Sulphur Works area below Mount Diller. Fumoroles encountered on the climb up or ski down should be navigated with caution.
Aron Bosworth
The southwest chute.
Aron Bosworth
View of Mount Diller and surrounding peaks form the south.

Outdoor Project

About Us

We believe good things come from people spending time outside. It’s about more than standing on the mountain top. It’s about nourishment and learning. It’s about protecting what sustains us. It’s about building relationships with the outdoors and each other.
 
We are proud members of  
FOLLOW US
  • Find your adventure
    • Adventure Guides
    • Travel
    • Video
    • Articles
  • Connect
    • Contact Us
    • Our Community
    • Become a Contributor
    • onX Backcountry

Join free

Sign up to receive our newsletter packed with the best adventure guides, travel ideas, news, and articles.
We promise not to annoy you, but if you wish, you may unsubscribe at any time.
Outdoor Project may earn commission on products purchased through our links, which supports the work we do for our readers.
© 2021 Outdoor Project. All rights reserved.
Terms + Conditions Privacy Policy Site Map