Lilla Knappan is a cold-water canyon-and-wall dive in the Väderöarna archipelago, with boulders and small tunnels that reward a careful, structured route. The site is defined by rock, current-aware planning, and rich life on the boulder faces rather than by a wreck or artificial feature. Boat timing matters here: settled conditions make the canyon, wall, and return line much easier to enjoy, while rougher weather can turn the same terrain into a more exposed dive.