Near Fossil Mountain Out-and-Back
A good spot to turn right off the main trail and head up.
Near Fossil Mountain Out-and-Back
Forest at the Start of the Fossil Ridge Wilderness.
Near Fossil Mountain Out-and-Back
Mill Lake as viewed from Fossil Mountain.
Near Fossil Mountain Out-and-Back
The rocky slope before the summit.
Near Fossil Mountain Out-and-Back
The ridge before Fossil Mountain summit.

Looking for more photos?

View All Photos
Driving Directions
Hike Route

Fossil Mountain Out-and-Back

4.0 (2 Ratings)
A cool summit route that ends with spectacular views in every direction of the Fossil Ridge Wilderness.
5.2
mi
Distance
2,738
ft
Gain
strenuous
Difficulty
Fall ColorsGeologically SignificantLakeLess CrowdedViewsWildlife

Route Details

Flatter
Steeper
5.23mi
Distance
2,738ft
Elevation Gain
2,738ft
Elevation Loss
35%
Max Grade
12,748ft
High Point
10,037ft
Low Point
Path Type
There and Back
Description
Start at the Gold Creek Campground at over 10,000 feet. Stay right at the early junction to enter the Fossil Ridge Wilderness. The trail starts with a gradual incline in a beautiful pine forest. About 1.8 miles in, leave the trail for Fossil Mountain on your right. Look for a small cairn or your GPS. There is no trail, so bushwhack your way to the ridge. And if you feel like jumping on the ridge at a different point, again, it's up to you. First, you'll navigate some steep rock or just steep loose hillside, depending on your route. I do recommend trekking poles for navigating the scree. Once you get to the ridge, just continue along it. You hike through fields with sparse trees before getting to a Class 2 rocky section before the summit. You might be able to find some signs of faint trails, follow them if you want, otherwise choose your own adventure. The summit block can be taken head on with potentially a couple of easy Class 3 moves, or you can go around it to the right, either way will get you to the summit. The tippy top of Fossil Mountain (12,749') offers great views of all of the Fossil Ridge, including Mill Lake, Square Top Mountain and even Fairview Peak out to the east. You're unlikely to share the summit with anyone, but perhaps a pika. This is not a heavily trafficked area so if you're looking for solitude, this is a great place to be. There are supposed to be marine fossils visible in the Fossil Ridge, that's how it got its name, and I would presume on Fossil Mountain there would be some, so if you are into that sort of thing have a look around! Round-trip distance will be about 6.5 to 7 miles with 2,700' of elevation gain. Again, choose your own adventure to get back to the trail from the ridge. Once you get back to the main trail, you can continue down the way you came on the trail to head back to your car or if you continue on up the trail, you'll end up at Mill Lake which you had just seen from above.
History & Background
The limestone ridges in the Fossil Ridge Wilderness contain the fossilized remains of numerous prehistoric sea creatures.

Route Conditions

Report Conditions
No Condition Reports
Report Conditions

Nearby Hike Routes

Mill Lake Out and Back

Classic Hike Route

Mill Lake Out and Back

Birding
moderate
3.81 mi
+1,467 ft
Boulder Lake Out-and-Back

Classic Hike Route

Boulder Lake Out-and-Back

Commonly Backpacked
strenuous
6.73 mi
+2,195 ft
Fossil Ridge Trail One-Way

Classic Hike Route

Fossil Ridge Trail One-Way

Commonly Backpacked
moderate
11.59 mi
+2,622 ft
Fairview Peak Out and Back

Hike Route

Fairview Peak Out and Back

Views
strenuous
8.8 mi
+2,795 ft
Henry Lake

Hike Route

Henry Lake

Birding
strenuous
12.26 mi
+2,643 ft
Summerville Trail Out and Back

Hike Route

Summerville Trail Out and Back

strenuous
21.02 mi
+5,625 ft
Contributors
Ashley Peterson