Raedykes probably dates from the late 1st century AD (
Agricolan), though it has been argued that it could be
Antonine (2nd century) or
Severan (early 3rd century). The camp rampart (
vallum) encloses the summit and eastern slopes of Garrison Hill (), a prominent spur overlooking the valley of the Cowie Water, a small river draining into the
North Sea on the outskirts of Stonehaven. The camp covered an area of about , and a computer model suggests that this would have been sufficient to house three full legions, or around 16,000 troops The entire perimeter of Raedykes camp has been recorded, and is very irregular in shape, because of the terrain. There were six gateways of which five are visible, all protected by titulus outworks; two in the longest (east) side, one in the shortest (south) side, another in the north side and one more in the very irregular southwest side. The Mid Raedykes Farm lies inside the northwest corner of the camp and Broomhill Farm lies just inside the eastern rampart beside the southernmost eastern gateway. Raedykes is situated a day's march north from
Stracathro fort (initially also a marching camp) and a few hours' march south of
Normandykes. ==History==