Lost Sea Adventure : World's second largest underground lake

Experience the world's second-largest underground lake with a 3/4 mile walk along wide, sloping pathways through the cave. At the bottom, enjoy a boat ride on the beautiful glass-bottom lake. It was discovered in 1905 by 13year old Ben Sands. However people didnt believe him. When the people went later after 2 months the water level has changed. In 1960 Ben went back again and blasted away and confirm the existance of the lake.