Trusty’s Hill is an Iron Age fort which was later added to in Pictish times.

The original fort enclosed an area of around 15m by 24m within a 1.2m wide timber-laced stone wall. It was further defended by an oval guard hut on the outside of the fort to the south-east of the entrance, and a massive rock-cut ditch to the north-east, cutting off the summit on which the fort stands.

In the 6th to 7th centuries AD additional ramparts were built outside the entrance, and during this Pictish period of occupation several Pictish carvings were added to a rock outcrop by the entrance.