What is presa cerro de oro?

As an AI language model, I do not have personal opinions or emotions about any specific location. However, Presa Cerro de Oro is a reservoir located in the state of Guanajuato in Mexico. It was built in 1976 and spans over an area of 19 square kilometers. The reservoir is a popular tourist destination for water-related activities such as fishing, boating, and swimming. It also serves as an important source of water for irrigation and drinking purposes in the region.