Thunder Knob

Diablo Lake Area

Miles: 3.6 roundtrip

Elevation: 600 feet gained

Starting out through a washed out campground and crossing a rocky, seasonal creek, the trail enters a dense forest. Passing a few benches along the way, at about one mile, you reach a viewpoint and behold Colonial Mountain. There are on again off again views before reaching a pond and then eventually the trail's end, with several views of the surrounding mountains and Diablo Lake. The way is very gradual and the backcountry benches are well placed.

  • Get there: From I-5 take Highway 20 east past Marblemount about 24 miles and turn right at the Colonial Creek Campground near milepost 130. The trailhead is at the campground entrance.