Land and Sea Adventure to Soufriere, St Lucia. Explore St Lucia by land and sea during this full-day excursion. Discover the island's fishing villages and banana plantations in Morne Fortune. In Soufriere, view the iconic Pitons, then visit the Diamond Botanical Gardens, Diamond Falls and Sulphur Springs, the world's only drive-in volcano. After lunch at a local restaurant, take to the sea aboard a boat for sailing, swimming and snorkeling. Enjoy the warm turquoise waters and abundant sea life that makes up the sea-based portion of your St Lucia tour. Book and Save 10%: Land and Sea Adventure to Soufriere, St Lucia.