Cola de Caballo (Spanish for "Horse Tail") is a waterfall about 40 km (25 mi) from Monterrey, Mexico, in the town of Villa de Santiago, Nuevo León. It is open to the public and is accessible via a walking path. A kilometre (American spelling: kilometer), symbol: km is a unit of length in the metric system equal to 1000 metres (from the Greek words Ïίλια (khilia) = thousand and μÎÏÏο (metro) = count/measure). ... A mile is a unit of distance (or, in physics terminology, length) currently defined as 5,280 feet, 1,760 yards, or 63,360 inches. ... Monterrey is the capital city of the Mexican state of Nuevo León. ... Nuevo León (Spanish for New León, after the former kingdom in Spain) is a state located in north-eastern Mexico. ...