Engineer Mountain (12,968 feet) is a fun 12er right off Highway 550 between Silverton and Durango. Park at Coal Bank Pass to access the trailhead. The route begins with very smooth, runnable switchbacks for a couple miles. Then turn left to begin the scramble up the ridgeline. There is one class 4 move up a chimney. Other than that, the scrambling is not too technical, though there is quite a bit of loose talus.