Dark, loud and wavy, the tunnel is an intimidating challenge for any first-timer. The upper half of the tunnel includes two waves sufficient to roll a boat: the lower half is generally flat water until the hole on the right at the tunnel exit. A rock on river right shortly below the exit can also be a hazard if you exit the tunnel out of control. If possible, safety dictates that you move downstream from the exit to the reconfluence with the main river in order to avoid danger from boats following through the tunnel.