Indian Heaven Wilderness is a protected area located inside the Gifford Pinchot National Forest of southwestern Washington state. The wilderness consists of 20,782 acres (8,410 ha) of broad, forested plateau, with meadows straddling numerous volcanic peaks and at least 150 small lakes, ponds, and marshes. The wilderness also contains the Indian Heaven volcanic field. Originally known to the Indians as "Sahalee Tyee," the area has been and remains culturally important to Native Americans. During the past 9,000 years, the Yakima, Klickitat, Cascades, Wasco, Wishram, and Umatilla tribes gathered in this area for berry picking, fishing, and hunting.