I've been on top of this rock! La Piedra Del Peñol, Spanish for "The Rock of Guatapé", also known as El Peñol Stone or simply as La Piedra is a massive rock located in the town and municipality of Guatapé, in Antioquia, Colombia.
Medellin, Colombia this is known as a Chiva. It is a party bus. There is usually band on board and will make numerous stops around the city or surrounding towns. Everyone drinks and dances during the trip.