Blackwall Mountain is a low ranked 13er located in the San Juan Mountain Range. This peak combines nicely with Wildhorse Peak, in fact you have to bypass Wildhorse on your way to Blackwall. This peak is not often summited since it is not on a centennial or bicentennial lists of Colorado peaks (= highest 100 or highest 200). Its summit has a small cairn and offers great view in all directions, especially of Coxcomb and Redcliff to the north, and Wetterhorn with Uncompahgre to the east.
Colorado Rank: 593.
The name was given in 1906 by Board on Geographic Names Decisions. GNIS Detail - Blackwall Mountain
Gravel Mountain 9.8 km Seigal Mountain 9.8 km
From Ouray, the turnoff to Engineer Pass is a little over three miles south of Ouray. Once at Engineer Pass, the road takes you east to American Flats with Wildhorse Peak to the north. The trailhead is on the east side (Lake City side) of the Engineer Pass. There is a marked trailhead for Horsethief Trail, mile marker 17.
From Silverton, follow the road up the Animas River past Howardsville, Eureka, and Animas Forks to reach Engineer Pass.
From Lake City follow the Henson Creek towards Capitol City and Engineer Pass. Trailhead is below the Engineer Pass summit, mile marker 17. There is an Alpine Scenic Loop information sign and a small pull off (=parking lot).
Another great, but long approach on foot (no need for 4WD vehicle and off road driving) would be using Bear Creek Trail approach. You start just 2.3 miles past Ouray, and follow this spectacular historic trail past the Yellow Jacket Mine at 4.3 miles. You will take the left (north) fork well signed for Horsethief trail, and it will bring you to American Flats. One way is about 7.1 miles to American Flats, add 3 more miles to the summit of Wildhorse Peak, so count slightly over 20 mile round trip. Could be a great long trail run, or an overnight backpacking trip.
Detailed description of Bear Creek Trail here.
The peak is a non-technical hike, with a relatively easy access from Engineer Pass area. It is nicely combined with Wildhorse Peak (you have to hike past Wildhorse to reach this peak), and with Peak 12,968 A.K.A. Dragon’s Back. It provides excellent views in all directions along its access and from its summit. I particularly enjoyed the section around Dragon’s Back - a very scenic peak sitting by a small lake. This spot is ideal for setting up your tent.
The difficulty of the route - South Ridge - does not exceed class 2. Start at the trailhead for upper Horsethief trail - a well marked TH on the east (Lake City) side of Engineer Pass. Follow this trailhead to the base of Wildhorse Peak and then head towards the saddle leading to Peak 12,968 feet (= Dragon's Back). You can see the route from the saddle as seen below. There is no trail, but hiking on the grassy slopes with crossing a little bit of scree is easy. Stop by a little unnamed lake and admire steep west side of Dragon's Back. For scenic pictures of Dragon's Back visit this album.