Archaeologists hope to finally solve mystery of tunnels underneath Scottish Highlands

Cracknie, located in Borgies Forest, Scotland, is one of the best preserved Iron Age souterrains in the country

A team of archaeologists are using lasers to map out mysterious Iron Age tunnels scattered about the Scottish highlands which have baffled scholars for years

(SWNS)

A team of archaeologists are using lasers to map out mysterious Iron Age tunnels scattered about the Scottish highlands which have baffled scholars for years.

The method used involves a device called a Leica BLK360 laser scanner to map the site.

The device fires lasers at the walls 10,000 times a second.