The Anjajavy's Protected Area and its surroundings include a geological phenomena of rare beauty: the Tsingy. This karstic and highly rugged landscape is the dramatic expression of an evolutionary stage of the earth, taking the shape of a “stone forest”, with limestone towers and spurs as high as 30 meters, all within the forest and in the middle of the sea. Nature has adapted itself to these labyrinths for millions of years and has formed unique natural shows of caves, grottos, highland areas, gorges and walls of rugged rocks. Due to their inaccessibility and their resistance to fire, the Tsingy has provided protection for numerous parts of the primary forest.