Thread:Cobalt Sea/@comment-35361350-20180515000240/@comment-35304534-20180520215106

I like those ideas. How about grotto caves; Caves that link the land and the sea with an entrance in the mountains and an exit in a reef. Or the limestone tunnels; Pits in the bottoms of rainforest lakes and streams caused by water erosion. The limestone tunnels would be full of water and be dangerous to navigate but minerals would build up in the deepest parts.