<p>A landslide covered with vegetation near Deming, Washington is revealed with LIDAR.</p>

A landslide covered with vegetation near Deming, Washington is revealed with LIDAR.

Courtesy of Washington Geological Survey

See the Strange, Beautiful Landscapes Revealed by Lasers

Technology unearths a world hidden beneath the lush forests of the Pacific Northwest.

If you were to strip a forest of all its vegetation, what would you see? To find out, Washington state’s government is using airplanes equipped with LIDAR technology to scan the state’s heavily-forested ground. What’s being revealed beneath the trees is a spectacular and strange landscape of hidden geology. Old landslides, abandoned river channels, ancient lava flows, and the tracks of glaciers are suddenly visible in stark relief.

After the devastating Oso landslide in 2014 that killed 43 people in a small town 50 miles outside of Seattle, Washington’s Geological Survey decided to use LIDAR to get a better handle on the state’s geologic hazards. LIDAR, which stands for “light detection and ranging,” works by sending laser light pulses

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