 El Caracol, Ecatepec

The Deposito de Evaporación Solar "El Caracol" (also known as El Caracol de Texcoco or "El Caracol de la Ciudad de México) is a large spiral-shaped retention basin located over the former lakebed of Lake Texcoco, northeast of Mexico City, in the "municipio" of Ecatepec de Morelos, Mexico.Built in 1944 by the SOSA Texcoco corporation, the basin is called "el caracol" (the snail) due to the short, spiral-shaped concrete levee that circles it.