Located at Cynthia Bay on the southern shore of Lake St Clair, this boat ramp serves as the primary — and most practical — launch point for boating on the lake.

The facility features a single-lane concrete ramp with an adjoining walkway, managed by the Parks and Wildlife Service. Toilets, a café, and a spacious parking area are available on site.

The ramp sits within the Tasmanian Wilderness World Heritage Area, at the southern end of Cradle Mountain–Lake St Clair National Park.

Boaters access Australia's deepest glacial lake, where sheer dolerite cliffs rise from the water and surrounding forest creates dramatic scenery.

Navigation restrictions apply within 300 metres upstream of St Clair Dam and 300 metres downstream on the River Derwent. Boaters are advised to accelerate gently in shallow areas to avoid disturbing sensitive lake-bed habitats.