from federal highway Route 70. Las Grutas de la Catedral gets its name because the stalactites and stalagmites have formed a veritable cathedral in its interior with a pulpit, a choir and some pews. Recently discovered Gruta del Ángel is located 700 meters from it. Named after stalactites and stalagmites that resemble an angel. Also nearby attraction is Tamasopo is located on federal highway 70 heading towards Ciudad Valles,S.L.P Sotano de las Golindrinas: “The Cave of the Swallows” is one of the largest open pit caves in the world, situated on the east side of the Sierra Madre Mountains from Rioverde. About 15 minutes away from Rio Verde are the towns of El Refugio, La Loma, San Diego and San Martin. In the region they are known for their traditional annual festivities which venerate the local patron saint of each town. San Diego is located between the towns of La Loma and San Martin and in November is the town's annual festivities are celebrated. The annual festivities of La Loma are celebrated annually each July 4 to 12. Climate References Notes External links Ciudad de Rioverde Official website Local Census of 2005 INEGI: Instituto Nacional de Estadística, Geografía e Informática] Municipalities of San Luis Potosí