Four times a day, 13 billion cubic feet of water are forced in and out through a passage 492 ft wide and 102 ft deep. On this exciting excursion through wild landscape there is a good chance you will observe sea eagles and parts of the Caledonian fold belt - a range of mountains that are over 250 million years old. While you sit safely and comfortably in sturdy rubber rafts - operated by highly experienced and knowledgeable pilots - you can be sure to enjoy a day of rare adventure, in harmony with nature, eagles and the deep blue sea. Welcome aboard!