Tongass National Forest · Alaska

Harlequin Lake

0.7 mi of trail, end to end · native material surface · trail No. 35655 · trail class 3 · typical grade 0-5% · tread 18-24 inches wide · hiking, bike · seasonal: hiking 05/15-09/15

Trailhead Dangerous River Trailhead Drive there

Dangerous River Trailhead the Forest Service's write-up

season Year round to

This trailhead looks to the east at Harlequin Lake with beautiful blue icebergs, and the Dangerous river is directly north, it is a breaded glacial river and you will often see icebergs floating down it.

This trailhead on fs.usda.gov

Every trail in Tongass National Forest

Other trails from the Dangerous River Trailhead

All 589 trails in Tongass National ForestFind a trailForest on fs.usda.gov

About this trail's facts

The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the forest's own site before you go.