Sometimes, but not always, the absence of tethering holes can be explained on the ground that the pillar had not been preserved to a height at which the hole would appear. Pritchard suggests that the holes may have been used to secure drag ropes to haul the heavy pillars from the quarry to the building site. But the inconsistency of the appearance of the holes is as much a problem for this explanation as for the suggestion that they were tethering holes.