Ramillies Channel Marine Site sits on the eastern shore of Gambier Island in Howe Sound, British Columbia, and is considered one of the standout stops along the Sea to Sky Marine Trail.

The site is roughly 11–12 kilometres by water from Porteau Cove and features three pebble beaches that remain accessible across tidal ranges, making for straightforward landings by kayak or canoe.

A mossy bench above the high tide line on the middle beach provides a natural camping area. Above the beach, a level grass terrace accommodates several tent sites, with additional spots tucked into the forest.

On-site infrastructure includes a composting toilet, a picnic table, and two aluminum bear-proof food caches. The site is reservation-free and free to use, operating on a first-come, first-served basis.

Paddlers should note that a private cabin was under construction at the south end of the beach as of 2024.