Plan your visit FAQ I'm claustrophobic - can I go on your boat trips? We recommend that anyone who suffers from claustrophobia checks out our orientation guide to give you a feel for what it's like underground. There is nowhere to get off the boat once it has entered the tunnel, so for your comfort we suggest that you are sure that you'll be comfortable before you begin the trip. If you want to chat to us before you book just give us a call. Not all of our boat trips go underground. If you're sure you won't be comfortable in the tunnels, why not consider our open water cruise, or one of our dining boats?