Lasers reveal 15th-century fortified Zapotec city in Mexico
When you buy through connection on our land site , we may garner an affiliate direction . Here ’s how it works . Lasers buck from an aircraft have break the clay of a 600 - year - old Zapotec metropolis in southern Mexico , a fresh study finds . The technique , known as lidar ( light sleuthing and ranging ) , works by having a simple machine aboard an aircraft send millions of optical maser pulses toward the ground and then calculating how long it takes for the laser to jounce back ....