Stalactites and stalagmites in Gruta da Lapinha, near Belo Horizonte, MG Brazil
Unless you are unfortunate enough to suffer from claustrophobia, you will be severely tempted by the idea of exploring cave systems, especially big ones, because they can contain some of the most spectacular rock formations you could ever wish to see. Stalactites and stalagmites are two types of such formations typically found in caves. Stalactites hang from the ceiling, much like icicles. Stalagmites, on the other hand, grow from the floor.