Found it!
www.telegraph.co.uk.../news/2003/11/07/winca07.xml&sSheet=/news/2003/11/07/ixworld.html
Using an infra-red camera to peer through dense Peruvian forest cover for the first time, explorers have found a lost ruin which seems to be a sister
site of the Inca ceremonial city of Machu Picchu.
Flying over the Andes in a single engined Cessna, the Anglo-American expedition found Llactapata when the camera picked out the outlines of stone
buildings, which retain heat, unlike vegetation.
[Edited on 11-11-2003 by Netchicken]


