Marble River Canyon is one of Vancouver Island’s hidden treasures for kayakers—a rugged waterway defined by dramatic rock formations, secluded caves, and serene still waters. Nestled on the east side of the island near Quatsino and Coal Harbour, this canyon offers an unforgettable mix of white-water thrills, scenic tranquility, and rich natural history. In this guide, every detail—from access routes to on-water challenges—is laid out to help you plan a safe and exhilarating adventure.