The Alpine Lakes Wilderness is a large wilderness area spanning the Cascade Range of Washington state in the United States. The wilderness is located in parts of Wenatchee National Forest and Snoqualmie National Forest, and is approximately bounded by Interstate 90 and Snoqualmie Pass to the south and U.S. Route 2 and Stevens Pass to the north. The Alpine Lakes is the largest wilderness area near the population centers of Puget Sound, at approximately 390,000 acres (1,600 km2)[Source]