Lynchat Work on A9 leads to 'Iron Age finds' in Cairngorms drewbhoy Dec 4, 2017 Work on the A9 has led to the discovery of a possible structure, pottery and a stone tool from the Iron Age.bbc.co.uk/news/uk-scotland-highlands-islands-42227561
Heh I love the quote in the Article 'Souterrains are underground structures that may have been used as stores, defences or in rituals.'
I don't know would suffice!
The BBC love to spin a story :-)