Directions • From Interstate 15, take State Road 92 into American Fork Canyon. Go to Tibble Fork Reservoir and find the right fork, an unpaved road. Follow it for 4.2 miles. The road has exposed rock and washouts and will be slow traveling. A high-clearance vehicle is preferable. The trailhead is Shaffer Fork, which also is labeled as FS 194.
Forest Lake sits in the middle of a tree-lined basin that is green throughout the summer. A creek runs in front of the trailhead. Even in late summer, you must be prepared to get your feet wet. After the creek, follow the trail to the left. You will see a few markers labeling the trail as FS 194. The trail ascends through the Uinta National Forest and is shaded by aspen and pine trees. The trail receives heavy traffic by off-road vehicles and can be muddy year-round. At the top of the trail is a basin containing Forest Lake.