Mountain Lake Access provides a boat launch and parking area on Orcas Island's Mountain Lake within Moran State Park, accessible via a single-lane dirt road that restricts large RVs and trailers.

The launch serves as a gateway for kayaking, fishing, and non-motorized boating on the lake, with rental equipment available through Orcas Adventures at the adjacent day-use area.

Note that internal combustion engines are prohibited on Mountain Lake, and access requires ferry passage to Orcas Island.