Science

32 times lasers revealed hidden forts and settlements from centuries ago

Lasers are being used extensively in archaeology for recording and discovering sites as well as analyzing artifacts in great detail. One laser technology that is particularly good at discovering new sites is lidar (light detection and ranging). 

In this technique, pulsed lasers are emitted (usually from an aircraft) and the reflected light is used to map out the landscape. This technique can be especially useful when there is a large amount of vegetation covering a site. 

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