Lost 'White City' May Lie Hidden in Rainforest Archeologists in Honduras spot intriguing topography using laser pulses By John Johnson, Newser Staff Posted May 15, 2013 12:03 PM CDT 8 comments Comments File photo of a rainforest, this one in Thailand. (Shutterstock) (Newser) – A little of bit of high tech may have found what 16th-century conquistadors could not: the legendary Ciudad Blanca, or White City, of Honduras. Archeologists think they've spotted the ruins of some kind of metropolis hidden by the Mosquitia rainforests, reports LiveScience. They won't know for sure until they start digging later this year, but low-flying planes sending laser pulses—a technology called lidar—have turned up features that could be ancient roads, canals, and buildings. The existence of Ciudad Blanca has never been confirmed, but those conquistadors of yore believed it held huge stashes of gold.