Share Album Published August 31, 2021 Forest Lakes (4 new items) Trailhead: Moffat Tunnel East Portal Distance: 7.8 mi Elevation Change: 1,641' Leaving the trailhead, the trail skirts the tunnel entrance then parallels South Boulder Creek. After about a mile take a right turn on the Forest Lakes trail. The trail climbs steadily to a bridge over Arapaho Creek. Lower Forest Lake lies about another mile and a quarter further on up the trail. Stay to the west of the lower lake to continue on the trail to upper Forest Lake.