"While doing a survey in the area, he came across what looked like the remains of a small pre-Columbian village scattered about an ancient lava bed, called Angamuco, once a settlement of the fierce Purepecha (Tarascan) people, who rivaled the Aztecs in central Mexico from around AD 1000 until the arrival of the Spanish in the early 1500s. "We thought we could knock out Angamuco in a week," he recalled. "We just kept going and going and going." It turned out to be a huge site. In 2010, Fisher used lidar to map Angamuco. The results were perhaps even more astounding than those at Caracol. The images gathered after flying over Angamuco for just forty-five minutes revealed twenty thousand previously unknown archaeological features, including a bizarre pyramid that, seen from above, is shaped like a keyhole"