Canopy (IMAGE) American Geophysical Union Caption The Honduran Mosquitia's dense canopy of tree tops rising some 50 meters (164 feet) above the forest floor has long concealed structures on the ground. Scientists can now detect those structures from aircraft using light-detection-and-ranging (lidar) -- a laser-based technology. Credit UTL Productions, LLC Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.