located at Latitude 29.6031200, and Longitude -109.5259500. Espinazo del Diablo is a natural rock formation nearby, that rises jaggedly into the sky like the backbone of the Devil. La Gruta Profunda is a Cave located in the Malpais, a few kilometers from town, and is surrounded by canyons, and has within it the Tapón Sifón, a deep pool of blue-green water. El Pantano (The Swamp) is another area visited by residents and visitors. It is a swampy area located in the mountains about 8 kilometers from the town. Here, a spring of water rises up from deep underground, creating an area of mud and quicksand. Popular Festivities On October 15 the patron saint festival of Saint Teresa of Ávila is celebrated, with dances, fireworks, music, dances and a popular fair. Government Characterization of the municipal government The City Council consists of a municipal president, a trustee, three general aldermen, and two aldermen providing proportional representation of the population. Timeline of Municipal Presidents References External links Official Web site Enciclopedia de los Municipios de Mexico INEGI Gobierno de Sonora Populated places in Sonora 1678 establishments in the Spanish Empire