Radar Helps Uncover Lost Metropolis     1 2 3 4 5 6 7 8 9 Medieval City Medieval City Angkor was a dispersed, low-density urban area, with its population spread in a constellation of suburbs. This reconstruction of settlement space across the Angkor area depicts a typical residential area, with houses on elevated mounds, interspersed with small rectangular ponds and local temples. Walled boundaries of rice fields divide up the landscape. Image credit: Tom Chandler, Monash University, Melbourne, Australia     Jet Propulsion Laboratory    California Institute of Technology Start slideshow