Lost Mayan City Found Hidden Under the Jungle

Thanks to 3D mapping, archaeologists have found the ancient Mayan city of Holtun, or Head of Stone. It's been long known that something was there but because of centuries of jungle covering the area, it was nearly impossible to know exactly what it was. The 3D topographical map effectively 'erased' the rain forest… » 4/27/11 7:20pm 4/27/11 7:20pm