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Back to Dercum Mountain

Lost Mine

CO

Historical data for the Lost Mine trail at Keystone.

Current Status

Open

Difficulty

Green

Section

Dercum Mountain

Status Timeline

Current Season

10/26/20252/1/2026

Prior Seasons

11/14/20244/6/2025
12/18/20234/14/2024
Snowfall(224 days)
Closed(4)
Open(4)
Groomed(1)

Recent Changes

Feb 1, 2026, 07:00 AMLatest
Closed→Open
Sep 29, 2025, 02:30 AM
Closed

Statistics

Trail Season Length46 days

Number of Days in Each State

Closed
125 days
Open
46 days
Hold
0 days
Groomed
0 days
Unknown
0 days