making of hard apple cider and other food processing. There is also the making of bricks, cinderblock and clay roof tiles. Other industries include textiles, chemicals, metals, furniture, ceramics and glass. Commerce, tourism and services employ 39% of the population. This commerce includes that geared to local, regional and tourist needs. Tourism in San Pedro is based on its history, but the biggest attraction, the Cholula Pyramid is technically located in neighboring San Andrés. This is what has made Cholula one of the better known destinations among foreign travelers to Mexico, as images of the pyramid with the church on top is often used for tourism promotion. The second most important attraction, the San Gabriel monastery is in San Pedro along with most of the 37 churches Cholula is famous for. Services are more geared to tourism than those in San Andrés as many establishments are clustered around the city's main square. Geography and environment San Pedro Cholula is located in the Valley of Puebla, which is a flat area bordered by the Sierra Nevada to the west, the La Malinche volcano to the north. It is located in the center west of the state of Puebla, with the city of Puebla only about ten kilometers to the east. It extends over 51.03 km2 and borders the municipalities of Juan C. Bonilla, Coronango, Cuautlancingo, San Gregorio Atzompa, San Andrés Cholula, Puebla, San Jerónimo Tecuanipan and Calpan. The valley floor is an expanse of plains crossed by a number of small rivers, streams and arroyos, with the most significant being the Atoyac River. The Atoyac River has its beginning in the runoff of both the Iztaccíhuatl and Popocatepetl volcanoes. The area has an average altitude of 2,190masl, with a gentle descent from northwest to southeast along the Atoyac River. There are two main elevations: the Zapotecas Mountain, which rises about 200 meters over the valley and the Tecajetes, which rises 210 meters. There is mountain biking and motocross on the Zapotecas Mountain as well as parasailing at the San Bernardino Chalchilhuapan Mountain. Each year, there is a mountain biking event just north of the city in March in three categories: beginners, advanced and expert. The race begins from the main plaza of Cholula and extends for 50 km through a number of small communities. The Zapotecas Mountain is important culturally as well, figuring in a number of local myths and legends,