Contact: Natasha Pinol
American Association for the Advancement of Science
Caption: A broad view of Hoyo Negro, shot from the floor near the south edge, showing the immensity of the chamber and the complexity of the boulder-strewn bottom. One access tunnel can be seen near the ceiling at top left. This photo was taken by the "painting with light" method on a 30 second exposure.
Credit: Photo by Roberto Chavez Arce
Usage Restrictions: Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission.
Related news release: A skeleton clue to early American ancestry