Tehuantepec, Isthmus of, c.125 mi (200 km) wide at its narrowest, S Mexico, between the Gulf of Campeche and the Gulf of Tehuantepec. It is mostly a rolling, tropical lowland with the lowest pass elevation at 754 ft (230 m) above sea level. Building of an interoceanic canal there was long considered, but estimated costs proved prohibitive. A transisthmian railroad between Coatzacoalcos and Salina Cruz was opened in 1907.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.