News Earth Unveiling hidden craters Laser radar technique discerns evidence of a relatively young impact By Sid Perkins December 2, 2008 at 5:09 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print Using laser-radar equipment during aerial surveys of forested land can reveal small craters that are otherwise not easy to detect, a new study shows. VOILA! | Typical laser-altimeter data of the area surrounding the Whitecourt crater resembles a normal aerial photograph of a forest.