Many chamberless cairns and those with stone chambers have concave forecourts which are reminiscent of those that had been built earlier of wood (Haddenham and Street House) in Yorkshire.
Viele kammerlose Steinhügel und jene mit Steinkammern haben konkave Vorhöfe, die an diejenigen erinnern, die Jahrhunderte zuvor in Holzbauweise (Haddenham und Street House) in Yorkshire gebaut worden sind.