What country announced the discovery of 16 petroglyphs and cave paintings, some over 4000 years old, in Hidalgo state in April 2026?

Recently, Mexico announced a significant archaeological finding in its Hidalgo state: the discovery of sixteen petroglyphs and cave paintings, some dating back over 4000 years. This remarkable collection of ancient art was uncovered by specialists from Mexico's National Institute of Anthropology and History (INAH) during archaeological salvage work for the construction of a new passenger train line connecting Mexico City and Querétaro. The discoveries highlight the rich and layered history embedded within Mexico's landscapes, often revealed through modern development projects.

The newly identified rock art, located at a site known as El Venado near the Tula River and La Requena Dam, spans a vast chronological period from prehistory to the Mesoamerican Postclassic era, which concluded with the arrival of Spanish colonizers. These intricate works include both petroglyphs, which are rock engravings, and pictographs, made with mineral or vegetal pigments. Among the striking figures are anthropomorphic forms, some adorned with elaborate headdresses and shields, and images reminiscent of the rain god Tlaloc, offering a rare glimpse into the spiritual and symbolic practices of ancient Mesoamerican civilizations.

Understanding the immense cultural value of these ancient artworks, the Mexican government swiftly responded to the discovery. In October 2025, Mexican President Claudia Sheinbaum Pardo announced a crucial change to the planned railway route to ensure the preservation of these irreplaceable heritage sites. This decision underscores Mexico's commitment to protecting its archaeological treasures, recognizing that such findings provide invaluable insights into the lives, beliefs, and artistic expressions of its earliest inhabitants, enriching our collective understanding of human history.