|NATIONAL PARKS QUICKLINKS|
Check in at Marblemount Ranger Station. Primitive Campgrounds are first come first served. Park at Colonial Creek Campground off of Hwy 20 near Diablo Dam. Trailhead has running water. I did this hike with three kids under 5 carrying their own small packs and three adults with varying levels of backpacking experience.
Very flat trail along Thunder Creek from the trailhead to the Thunder Camp group site where we camped. Some bear and mountain lion activity depending on the time of year.
Restrooms at trailhead. Prepared latrines and firerings in campsite. Seasonal burn-bans. Ample water from Thunder Creek very near campsites.
Great hike for new backpackers or with kids.
Green Trails Map #48 Diablo Dam