Please answer the following question: San Juan River (Tamaulipas) - The San Juan River is the largest and most important river in the Mexican state of Nuevo Leon. The river feeds the El Cuchillo Dam which provides the city of Monterrey with water. The San Juan River basin has a total surface area of 33538 square kilometres (12949 sq mi). The San Juan River is a tributary to the Rio Grande (Rio Bravo) which is the fourth largest river basin in North America. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Natural Place