WBSkiing Guide

Mill A Trailhead

Trailhead Elevation	6,960'
Trailhead Location	40.6426° / -111.6833°
Road Mileage	6.6 miles
Online Map	View on wbskiing.com

Mill A Gulch is in Big Cottonwood Canyon. It is up-canyon from Elbow Fork and down-canyon from Butler Fork. Maxfield Basin, the West Butler Saddle, White Snake, Mill A Basin, Baker Pass, and Mount Raymond are located in or adjacent to Mill A Gulch, although all of these except Maxfield Basin are probably easier to access from Butler Fork.

Mill A Gulch

Getting to Mill A Gulch

The Mill A trailhead is located on the north (left) side of the Big Cottonwood Canyon road approximately 6.6 miles past the digital sign. The Mill A parking area is usually unplowed and some years parking isn't allowed. In either case you'll probably need to park 0.4 miles up the canyon at the Argenta trailhead.

About the name

Mill A is the site of the first of six lumber mills, named Mill A through Mill F, that were built in Big Cottonwood Canyon during the 1800s. The letter designations were based on the order that the mills were built without regard to their location in the canyon. The nearby canyons acquired their names from the mills. A total of 19 lumber mills were eventually built in Big Cottonwood Canyon, although not all of them received letter designations.

Mill A was built in the 1850s and was one of the first mills in Big Cottonwood Canyon. It was destroyed by an avalanche in 1856 and there was an avalanche fatality at the mill in 1875.