//
Photo: Steven Pavlov, CC BY-SA 3.0 via Wikimedia Commons
A canyon where the Missoula Flood waters once dropped over 400 ft at the end of the last ice age. The waterfall was four times the size of Niagara Falls, and carried more water by volume than all the rivers of the world combined. An interpretive center is on the south side of the parking lot, though there are informational signs and displays throughout the parking areas as well.
Dry Falls is a 3.5-mile-long (5.6 km) scalloped precipice with four major alcoves, in central Washington scablands. This cataract complex is on the opposite side of the Upper Grand Coulee from the Columbia River, and at the head of the Lower Grand Coulee, northern end of Lenore Canyon. According to the current geological model, catastrophic flooding channeled water at 65 miles per hour through the Upper Grand Coulee and over this 400-foot (120 m) rock face at the end of the last glaciation. It is estimated that the falls were five times the width of Niagara Falls, with ten times the flow of all the current rivers in the world combined.
© OpenStreetMap contributors
A large basalt rock which resisted being eroded by the Great Floods.
This is the main lake (called "Park Lake") just south of the Dry Falls overlook. If you don't have time for its recreational activities, the view from the highway is better than driving down to the lake shore.
At the south end of the park, this road first runs along the north end of Blue Lake (which is not part of the state park). It then goes to the far side of Park Lake and runs north, eventually merging with the main entrance. It allows for a close up look at the 400 ft cliffs. Caution: This road is normally barricaded just a quarter mile north of the Sun Village resort. You cannot enter the park from here, nor exit onto WA-17 coming from the park. You can drive up to the barricade on either side, but not cross (to prevent thru traffic).