Beneath the Guatemalan rainforests, hidden from mankind for more than a millennium, lie remains of the once vast kingdom of the Maya. A pair of scientists from The University of Alabama in Huntsville will be in Guatemala next week to test whether a camera carried aloft by a tiny, battery-powered helicopter might one day help uncover lost Maya ruins. Dr. Robert Griffin, an assistant professor of Earth system science at UAH, and graduate student Casey Calamaio will spend three days testing a multi-spectral camera during brief flights of a radio-controlled helicopter over Maya ruins at Tikal and Yaxha. They will use the images - similar to those from Landsat but in much higher resolution - to look for signs of the types of plant stress frequently seen in trees growing over archaeological sites in Central America.