Woss Lake Park was created in 1995 as part of the Vancouver Island Land-Use Plan.
Woss Lake Park is within the traditional territory of the Namgis First Nation. The park contains a portion of a First Nations traditional cross-island trade route known as the Grease Trail, which made its way over the Tahsis divide. Culturally modified trees (CMTs) have been identified in the park.
Woss Lake Park is a very steep, forested, seldom visited wilderness area. The park contains Roosevelt elk populations, a salmon fishery and potentially, habitat for the endangered Vancouver Island marmot. The park also contains a nameless, intact secondary watershed of 1,600 hectares that drains into the head of Woss Lake. This unnamed drainage contains valuable Chinook salmon and steelhead spawning habitat and a sensitive delta area with a variety of rare plant species.
It also protects representative old-growth forest landscapes, a complete watershed of a major tributary at the south end of Woss Lake, and is dominated by Rugged Mountain and the glaciers and snowfields of its north facing slopes. The pristine old growth forested slopes above Woss Lake and the scenery offered by Rugged Mountain and its glaciers, the largest on Vancouver Island, are of provincial significance.