Laser imaging of the rainforests of Mexico’s Yucatan peninsula have turned up thousands of ancient Maya structures — and an entire previously unknown city, a new study has found. By flying

Archaeologists have found thousands of Maya structures and a lost city they named Valeriana in Mexico by using laser mapping technology, according to a new study.

East of the town of Dos Lagunas, past the major highway cutting through Mexico’s south, the forest rises up in a dense wall of grasping roots, spindly branches and veils of brown and green. Beyond it lies the ruins of an old Maya city,