Macabilero, Guatemala - National Geographic Explorer Dr Albert Lin with Puerto Rican archaeologist Omar Alover Firpi (Brown University) exploring the acropolis of the ancient Maya city of Piedras Negras , on the banks of the Usamacinta River on Guatemala's western border.
National Geographic Explorer Dr Albert Lin in front of a newly discovered structure in the ancient Maya city of El Palmar (National Geographic/Ali May)
National Geographic Explorer Dr Albert Lin with Guatemalan archaeologist Dr Edwin Román Ramírez (University of Texas at Austin) inspecting some ancient pottery at a newly discovered building in the ancient Maya city of El Palmar.
La Cuernavilla, near El Zotz, Peten District, Guatemala - A looted building at the site of a fortress citadel, newly revealed by Guatemala's PACUNAM LiDAR Initiative at La Cuernavilla, near the ancient Maya city of El Zotz.
National Geographic Explorer Dr Albert Lin using the PACUNAM LiDAR map to investigate some newly discovered buildings in the ancient Maya city of El Palmar.
National Geographic Explorer Dr Albert Lin using the PACUNAM LiDAR map to investigate some newly discovered buildings in the ancient Maya city of El Palmar.
National Geographic Explorers Albert Lin (L) and Guillermo De Anda of the Grand Maya Aquifer project prepare to descend into a recently discovered underground lake (cenote) in search of secret tunnels leading beneath the ancient Maya pyramids at Chichen Itza in Yucatan, Mexico.
La Corona, Peten District, Guatemala - National Geographic explorer Marcello Canuto (Tulane University) inspects a near 1500 year-old ritual altar discovered at the ancient Maya city of La Corona in Guatemala, as a team prepare to lift it form the ground. (National Geographic/Arthur Haynes )
Macabilero, Guatemala - National Geographic Explorer Dr Albert Lin exploring the acropolis of the ancient Maya city of Piedras Negras , on the banks of the Usamacinta River on Guatemala's western border.
National Geographic Explorer Francisco Estrada Belli (Tulane), one of the project leaders of the most extensive ever LiDAR survey of Guatemalan jungle. (National Geographic/Ali May)
National Geographic Explorer Guillermo De Anda in the jungle in Mexico's Yucatan Peninsula, searching for flooded caves leading beneath the great pyramids of Chichen Itza.(National Geographic/Sindbad Iksel)
La Corona, Peten District, Guatemala - National Geographic explorer Marcello Canuto (Tulane University) inspects a near 1500 year-old ritual altar discovered at the ancient Maya city of La Corona in Guatemala.
La Corona, Peten District, Guatemala - Guatemalan archaeologist Alejandro Gonzalez excavating at the ancient Maya city of la Corona in Guatemala, believed to have played a key role in the rise of a powerful dynasty known as the Snake Kings. (National Geographic/Arthur Haynes )
National Geographic Explorer Dr Albert Lin in the field following the greatest ever aerial LiDAR survey of ancient Maya ruins in the Guatemalan jungle.
National Geographic Explorer Dr Albert Lin in the field following the greatest ever aerial LiDAR survey of ancient Maya ruins in the Guatemalan jungle. (National Geographic//Ali May)
Geheimnisse des SchlangenaltarsMacabilero, Guatemala - National Geographic Explorer Dr Albert Lin with Puerto Rican archaeologist Omar Alover Firpi (Brown University) exploring the acropolis of the ancient Maya city of Piedras Negras , on the banks of the Usamacinta River on Guatemala's western border.Bild: © National Geographic / Alasdair May
