Cube Iron Mountain Loop

Thompson Falls, Montana 59873

Cube Iron Mountain Loop

Cube Iron Mountain Loop Professional Review and Guide

"Quick access to mountain lakes makes this loop trip ideal for beginning backpackers or day hikers looking for routes with several length options. Camp at Cabin Lake and catch small cutthroat trout or scramble to Cube Iron Mountain, elevation 7,110 feet, for views into Idaho’s Selkirk Mountains and Montana’s Cabinets and Bitterroots.

The name “cube iron” refers to the remnant cube-shaped pseudomorphs of pyrite crystals (fool’s gold) found in rocks at some sites in the Cabinet Mountains. The pyrite here has been partially replaced by rusty red iron oxides, though you can sometimes find remnants of the original bright brassy pyrite in the cube cores. The cubes range in size. Choice ones are bigger than game dice."

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Trail Information

Thompson Falls
Nearby City
Trail Type
Skill Level
6 hours or overnight
Late June through October
4,760 feet
Trailhead Elevation
7,170 feet
Top Elevation
Lolo National Forest, Plains / Thompson Falls District
Local Contacts
USGS Mount Headley, Priscilla Peak
Local Maps