Hike the Ira Spring trail to the first switchback, then continue straight west on an small unmarked footpath. This is a trail that switchbacks through dark woods until it approaches a stream at around 3400 feet, a little over two miles from the trailhead. On the way up, avoid two trails that continue west, one of which goes to Dirty Harry's Balcony. When in doubt, follow the trail that goes up!
From the stream crossing, a mountaineer's way trail switchbacks up a steepening slope until it emerges in a scree field. Now the path becomes considerably steeper and harder to find.
It eventually becomes a scramble, and the path is faint and disappears altogether in places. Keep going though, and you will reach a minor peak on the ridge between Mount Defiance and West Defiance with great views. This is a very steep and open south-facing slope.
The optional summit of Web Mountain (occasionally also called West Defiance) is a few hundred yards west. Traverse on the south side of the ridge. On the way down, at around 4600 feet below a stretch of talus, bear right where the ridge splits.



