The entrance of the Iron Age fort of Trusty’s Hill (still in use in Pictish times) is marked with several Pictish carvings.
Carved onto the bedrock is a double disc and Z-rod on the left, with a Pictish beast on the right. Immediately below the Pictish beast is a long cone at the base of which is a round terminal with two spirals. This almost looks like a stylised sword piercing the belly of the beast.
OS Map for Trusty's Hill