High Quality Content by WIKIPEDIA articles! The King Range Wilderness is a 42,585-acre (172 km2) federally designated wilderness area within the King Range National Conservation Area in northern California, United States. The area was set aside with the passage of the Northern California Coastal Wild Heritage Wilderness Act of 2006 (Public Law 109-362). The Bureau of Land Management is the responsible agency and is currently working on a Management Plan for the King Range Wilderness. This section of California`s coastline is known as the "Lost Coast", a landscape too rugged for highway building, which forced the construction of State Highway 1 and U.S. 101 inland. The King Range Wilderness is the longest undeveloped coast, outside of Alaska, in the United States.