Hole in the Wall is a narrow tidal passage in the Discovery Islands region of British Columbia, Canada, just north of Desolation Sound Marine Park. It lies between Maurelle Island and Sonora Island, acting as a vital route linking waters toward Johnstone Strait (east/northeast) with inner channels like Okisollo Channel and the Octopus Islands Marine Provincial Park (on Quadra Island to the west/southwest).

Here is a short video showing one of our trips through the Hole in the Wall.

This spot is renowned among boaters for its dramatic tidal rapids. The large tidal ranges (often 4-5 meters or more) and constricted geography—steep, forested rocky walls channeling huge water volumes—create currents up to 10-11 knots at peak flood or ebb. This produces whirlpools, eddies, standing waves, and surface “holes” (giving the name “Hole in the Wall”). At full strength, it is hazardous or impassable for most vessels, but during slack tide (the short calm period as the tide turns, twice daily), it becomes safe and serene. Boaters time passages carefully using tide/current tables from the Canadian Hydrographic Service or apps like Aye Tides, often targeting 10-30 minutes around predicted slack.

The surrounding landscape embodies classic coastal BC wilderness: steep evergreen-covered mountains rising from the water, dense forests, giant bull kelp beds, and rich marine life including seals, sea lions, porpoises, eagles, and occasional orcas or humpbacks in nearby channels. It is a gateway to protected anchorages in the Octopus Islands, where many stern-tie in scenic, sheltered coves.

Traveling through in your Bayliner 4788 motoryacht adds comfort to the adventure. Many similar-sized cruisers explore Desolation Sound and the Discovery Islands, enjoying the spacious layout for extended trips. With good timing, the boat glides smoothly through the calm passage, flanked by sheer rock walls, opening to those pristine anchorages for relaxation amid the wilderness.