Backcountry Camping: A backcountry permit is required for all overnight stays. Permits are limited. There are numerous campsites along this trail, at most five miles apart. Some of the camps, such as Two Mile or Thunder Basin are small and do not hold larger groups. Designated stock camps are located at McAllister, Junction, and Thunder Basin, as well as at Five Mile along the Park Creek Trail.
The main trail winds through some exceptionally large old cedar and fir trees, with periodic views of the creek. Woodland flowers abound in season. This is the home of many birds, including owls, woodpeckers, and osprey near the creek. Look for deer and other animal tracks in the sandy soil and mud. At around 1.5 miles (2.4 km) the trail crosses Thunder Creek on a large wooden bridge. Thunder Camp lies just on the other side, and is a wonderful destination for families or for a first backpack. Many day hikers also enjoy bird watching from the bridge or exploring the nearby gravel bars. A quarter mile past the bridge and camp, the Fourth of July Trail junction is on the left. Following this trail up 3.2 miles (5.1 km) of switchbacks to Fourth of July Pass provides beautiful mountain views, particularly from the backcountry camp.
Neve Camp is a quarter mile beyond this junction, and is another lovely forested camp set well off the trail alongside the thunderous waters of the creek--which looks and sounds more like a small river at this point.
Had a blast here with my family, which included young children. Something to be aware of is the fact that it will always be winding around the lake. I'm not sure why. It just seems to be the case. If you go a quarter of a mile in any direction from the coast, the wind dies down. Just expect to encounter winds so heavy that it'll be difficult to hold your phone (or camera) steady. The children really enjoyed looking out at the water and we all had a blast taking in the sights. I would highly recommend visiting if you're already at North Cascades National Park.
Diablo lake trail was nothing less than perfect! The trail itself is about 80% shaded, not too rocky and incline was just enough to get the heart rate up. Most believe that the trail ends at the look out point… no way! Make sure you look to your right when at the end of the trail and go down to the bridge. If you really want an experience, venture out and go straight on the trail when down before the bridge…. Follow the sound of the water fall. The trail to the water fall is tight and all rock, waterfall terrain so be safe. Be careful when jumping these rocks to get down to the beach. You can see the beach from the bridge to the the left side of the damn. It’s beautifully peaceful and powerful. Our dog loved fetching sticks and swimming. I enjoyed cooling off myself. Not sure if you can swim here or let dogs in water but there were no signs that said otherwise.
The most accessible area of the North Cascades National Park Complex. Beautiful jagged mountains and charming lakes.
Diablo Lake is definitely the highlight imo.
Gorgeous place amazing breathtaking views extremely recommended. The fresh air and the mountains I’m in love with this place .
What a cool place to stop along the drive on Higheay 20. The majestic views are amazing. The road is good and views are plenty. Lots of places to pull out for your viewing and photographic pleasures. The leaves are a changing and the colors are beautiful. We plan to visit again. You'll like it I guarantee it.