The eastern Yucatán Peninsula study region is pierced by vast interconnected flooded tunnels, that function as underground rivers. The groundwater is the only source of potable water for the whole ...

Aktun Tuyul Cave System, MEXICO — Rays of sunlight slice through pools of crystal water as clusters of fish cast shadows on the limestone below. Arching over the emerald basin are walls of stalactites ...

The Yucatán Peninsula is a land where ancient history and raw geology meet. Beneath its flat limestone plains lie endless ...

The underwater caves of the Yucatán Peninsula are a window to the distant past. Through two million years and over multiple glaciation cycles, these caves have been transformed. When the sea level was ...

MEXICO CITY (AP) — Activists in Mexico have published photos of steel and cement pilings from a government project that were driven directly through the roofs of sensitive limestone caves on the ...

The ancient pot was discovered by members of the Urban Cenotes organization, which preserves caves around the Yucatán Peninsula. Photo by the National Institute of Anthropology and History ...

MEXICO CITY (AP) — Activists in Mexico have published photos of steel and cement pilings from a government project driven directly through the roofs of sensitive limestone caves on the Yucatan ...