Mason Lakes bouldering, Tobacco Root Mountains is a Montana bouldering destination near Pony on Granite/Gneiss, bouldering style. Best season: Late spring to early fall (May-October), before snow. Access is managed by Beaverhead-Deerlodge National Forest (USFS).
Classic lines and problems include Interplanetary Insanitarium V6, SeqKnar V5, Smoke on the Water V2/3, One Way Ticket to Midnight V2, Sleight of Hand V9.
The area is high elevation and requires a hike after the 4WD road. Snow can impact access and climbing conditions. Some problems may be highball without snow.
Visitor Access
- Nearest town: Pony, 1.5-2.2 miles to road leading to area
- Land manager: Beaverhead-Deerlodge National Forest (USFS)
- Access fee: Free (based on typical National Forest access)
- Season: Late spring to early fall (May-October), before snow
- Key routes / problems: Interplanetary Insanitarium V6, SeqKnar V5, Smoke on the Water V2/3, One Way Ticket to Midnight V2, Sleight of Hand V9 Confirm current access, seasonal closures, raptor restrictions, and avalanche conditions before you climb. Climbing is inherently dangerous—this guide is informational, not instruction.