St Michael's Mount replacing the pack horses which had previously been used. Its steep gradient renders it unsafe for passenger-use, thus The National Trust has made it out-of-bounds for public access. The causeway between the mount and Marazion was improved in 1879 by raising it by with sand and stones from the surrounding area. Repairs were completed in March 2016 following damage from the 2014 winter storms. Some studies indicate that any rise in ocean waters as well as existing natural erosion would put some of the Cornwall coast at risk, including St. Michael's Mount. Until recent times both the mount and the
CCGS Louis S. St-Laurent team of scientists mapping the sea floor. The first leg of the mission was a voyage to Norway mapping the Atlantic. This was to be followed by a 47-day leg to the North Pole. Travelling with the Swedish icebreaker "Oden", "Louis S. St-Laurent"s mission to the Arctic was the last of three performed in order to define Canada's claim to the Arctic continental shelf. While mapping during transit to the north, the scientists aboard the ship discovered a chain of 25–30 undersea volcanoes off the coast of Greenland. CCGS Louis S. St-Laurent CCGS "Louis S. St-Laurent" is a Canadian Coast