The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Adjacent mountains, 3,868 m (12,683 ft) and 4,155 m (13,623 ft) high, in the Sangre de Cristo Mountains of southern Colorado. They were landmarks for early explorers and traders.