THE ROCK SALT MINES
Racalmuto is a town of significant geological interest for the presence of the rock salt mine. Apparently, this salt bed, together with those of Realmonte and Petralia, is the third in the world still active. This mine is formed by a salt block divided into 3 distinct layers: the lower one is formed by potassium, followed by alternate layers of kainite and halite; the upper layer is a formation of potassium and magnesium chlorides. The mine is 100 m deep and can be accessed through some tunnels and truck tracks.