The Diablo Lake Overlook is located on Highway 20 (North Cascades Highway) at mile marker 132 and is a part of the Cascade Loop .
From the intersection of Highway 20 and Interstate 5, its about 90 minutes drive to get there. The overlook is just east of Colonial Creek Campground. Open to traffic year round, its a wonderful place for sunsets.
Night sky imaging is also wonderful at the overlook, the lake below and Colonial Peak above make for some stunning shots.