Is a volcano that is filled with mud. A few years ago it was discovered that the volcano was filled with mud and contained, sulfate, phosphate and magnesium, and the mud besides being refreshing, has curative properties that help cure acne, ulcers, rheumatism and fungus. The density of the mud avoids the sinking of the bathers. The tourists takes the mud out with Totumo, important resource of fresh water.