The Tampaón River, a stunning turquoise ribbon winding through Mexico’s Huasteca Potosina region, has long enchanted visitors with its clear waters, towering limestone canyons, and the spectacular Tamul waterfall. Tourists gather eagerly to capture photographs and enjoy the gentle spray of the cascade. However, beneath this peaceful surface lies a story that remained untold for years—a secret revealed only after the floods of January 2012 uncovered what the river had guarded for half a decade.