To prevent the Grijalva river from overflowing, during the construction of the Chicoasén dam, "el ratón" and some engineers die. Two archaeologists decipher antique signs on the walls of the Canyon and discover the source of danger.
2000
1959
1999
2008
2001
1987
2009
2016
1997
1954
1988
2017
2018
2015
1955
1961
2020
2007
1978
