The Columbia Encyclopedia, Sixth Edition. 2001-07.
Citlaltépetl
(stlältpetl) (KEY) or Orizaba (rsä´bä) (KEY) , peak, 18,700 ft (5,700 m) high, in the Cordillera de Anáhuas, E Mexico, on the Veracruz-Puebla border. It is the highest peak in Mexico and the third highest in North America. This snowcapped volcano is inactive; the last eruption occurred in 1687. The peak was first climbed in 1848.