Pacific Ocean Thrill Ride – Volcano coast exploration by ocean raft. An ocean rafting adventure is a perfect way to make your visit to Sitka exciting and unforgettable. You will be equipped with state of the art gear for this extreme adventure. Up to 50 mph fun on the waves in the open seating of Adventure Raft. Watch for whales and sea otters on your way to explore the ravaged volcanic coastline of Kruzof Island.