ElPotreroChico.com - Photos and local area information for El Potrero Chico, Hidalgo. - http://www.elpotrerochico.com.futuresite.register.com/
Posada El Protero Chico - General area information for the park and the town of Hidalgo. Directions for driving and flying. (El Potrero Chico, Mexico) - http://www.elpotrerochico.com.mx