![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
Archaeologists hope to finally solve mystery of tunnels underneath Scottish Highlands | The Independent
![The entrance to an Iron Age souterrain with a 20 metre underground passage at Kilvaxter in the north of the Isle of Skye, Highland, Scotland UK Stock Photo - Alamy The entrance to an Iron Age souterrain with a 20 metre underground passage at Kilvaxter in the north of the Isle of Skye, Highland, Scotland UK Stock Photo - Alamy](https://c8.alamy.com/comp/2HWYK1N/the-entrance-to-an-iron-age-souterrain-with-a-20-metre-underground-passage-at-kilvaxter-in-the-north-of-the-isle-of-skye-highland-scotland-uk-2HWYK1N.jpg)
The entrance to an Iron Age souterrain with a 20 metre underground passage at Kilvaxter in the north of the Isle of Skye, Highland, Scotland UK Stock Photo - Alamy
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,
![Historic Scotland - Grain Earth House Property Detail | Scotland history, Ancient buildings, Earth homes Historic Scotland - Grain Earth House Property Detail | Scotland history, Ancient buildings, Earth homes](https://i.pinimg.com/736x/0f/56/c7/0f56c758d801bb4fad646bbd0dcc26c7--orkney-islands-stone-bench.jpg)