Twin Sisters are two pillars of basalt that jut from the cliffs along Wallula Gap overlooking the Columbia River. Geologists say the rock formation is the result of erosion from a great flood near the end of the last Ice Age, about 12,000 to 15,000 years ago.
Twin Sisters Rock is a 1 mile lightly trafficked out and back trail located near Touchet, WA that features a river and is good for all skill levels. The trail is primarily used for hiking and birding and is accessible year-round.
birding hiking cave river views wild flowers wildlife