Stone Age Herbalist on Twitter: "Laser scans reveal mysterious Iron Age tunnels in Scotland. "Perhaps they were for storage, such as grain or dairy products like cheese... perhaps they were for security,
![Scotland's secret tunnel under the Forth, 50 years old and forgotten | Scotland & Northern Ireland | The Guardian Scotland's secret tunnel under the Forth, 50 years old and forgotten | Scotland & Northern Ireland | The Guardian](https://i.guim.co.uk/img/static/sys-images/Guardian/Pix/pictures/2013/11/18/1384775264307/The-Forth-Bridge-over-the-009.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctZGVmYXVsdC5wbmc&enable=upscale&s=482a6b40f385582183389594b1d8027a)
Scotland's secret tunnel under the Forth, 50 years old and forgotten | Scotland & Northern Ireland | The Guardian
![Archeologists use laser technology to study mysterious highland tunnels - without ever having to step a foot inside - Buy, Sell or Upload Video Content with Newsflare Archeologists use laser technology to study mysterious highland tunnels - without ever having to step a foot inside - Buy, Sell or Upload Video Content with Newsflare](https://d1muy2ct2wkbaz.cloudfront.net/video/532000/531989/580x325/0.jpg)