It is the largest outcrop of the Antioqueño batolito today located in the municipality of Guatapé and from where the municipality of Peñol took its name from 1714 when it belonged to its jurisdiction. Called by the Tahalí Indians as "wet" or "wet". Its maximum height is 220 meters and the minimum height is 140 meters. It is made up of a granitic rock called diorite quartz, which has minerals such as quartz, feldspars, horblenda and mica. Its origin dates from Upper Cretaceous from the tertiary age of Earth formation i.e. it is approximately 65 million years old.
The antioqueño batolito is a geological formation located in the department of Antioch, Colombia. It consists of an extensive mass of granite rock with an area of about 7,800 square kilometers. It sits on the central mountain range where it occupies the axial part of its northern end.