 The only access to Bun Sruth is on foot or by boat.From the sea the narrow tidal gorge is difficult to find, and difficulties in negotiating the channel can arise from the fast tidal flow and from seaweed which prevents the use of a propeller.At low tide the water level in the loch is higher than sea level, and drains over a rock shelf in the entrance, making entrance by boat impossible until the tide has risen at least seven feet.