The Sun Tunnel

The Sun Tunnel is a small tunnel, leading to the outside world. It goes for about a quarter day walking, when grows too narrow to go any farther. It is known to ThunderClan cats as The Pit, a pit leading nowhere good, so none can go there, as it is forbidden because cats have died here. The Sun lights up the tunnels perfectly at sunhigh, shining into the underround and lighting up the world.