What does «cerro testigo» mean in Spanish?
- Isolated hill in a flat area, also known as an otero hill. Generally a witness hill is a residual relief product of erosion over millions of years. It is a remnant of a platform in a relief where there are layers of hard rocks and soft rocks arranged horizontally in which erosion has sculpted horizontal landscapes. The soft rock layers are eroded by the rivers forming hills, and if the high plateau is attacked by erosion from all sides then the witness hills with flat summits appear. Hence it is said that they are "witnesses" of the ancient platforms that existed millions of years ago.