The Green Castle
Green Castle Hill, located just across from Rock House between Portknockie harbour and the Three Creeks shore, is a spot steeped in history. The site, which locals refer to as Green Castle, was the focus of archaeological digs in the 1980s by a team from Aberdeen University. What they uncovered was fascinating: this promontory dates all the way back to the Iron Age (around 1000 BC) and continued to be in use by Pictish peoples until about 1000 AD.
Sitting atop the hill are the remnants of an ancient defensive earthwork, similar to the Pictish promontory forts found along the northeast Scottish coast at places like Burghead, Cullykhan (Castle Point), Troup, Dundarg, Dunottar, and Castle Rock (Auchmithie). From this vantage point, it’s likely that the locals would have spotted Viking longboats as they made their way into the Moray Firth.
The site’s remains now re-covered showed the outlines of several buildings with oak-framed walls, signs of burning, timber and stone ramparts and post-holes that once supported roofs. One of the key defensive features was a Dark Age rampart, reinforced with timber and built over an earlier palisade fence. Excavations also revealed fragments of glass beads, rings, jet bracelets and pottery. Plus, there was pollen evidence showing that the area had been ploughed at some point, likely for growing oats.