The steep granite outcrop beside the reservoir east of Medellín is widely called La Piedra del Peñol, El Peñón de Guatapé, or simply La Piedra. The names reflect the neighbouring municipalities and their intertwined identities; the attraction’s operator uses “La Piedra” and places it in Guatapé. For a visitor, the first impression is physical: a dark rock rises abruptly above a green, water-cut landscape, and a narrow stairway traces its face. The view from the top is compelling, but the climb is only one part of the experience. Understanding how the rock is named, reached and operated makes the visit more useful than treating it as a quick photo stop.
The operator describes the formation as an outcrop of the Antioqueño batholith, a large regional body of igneous rock, and identifies quartz diorite and minerals including quartz, feldspar, hornblende and mica. Its page gives height figures of 220 metres at the maximum and 140 metres at the minimum, but such measurements depend on the reference point; this article does not turn them into an unqualified height above sea level. The same source records the Indigenous name “mojará” or “mojarra.” Because names and geological descriptions are sometimes repeated differently in travel material, attribution is important: these details are those published by the attraction’s operator.