After study this square cut is associated with a set of features interpreted as the foundation trench and settings for upright posts that would form a hut or another small structure.

Square cut (posthole?) in the bedrock cutting a linear N-S channel (SU530) also cut into the bedrock. The E and W sides of cut SU547 are aligned with the sides of SU530. This cut is also aligned with two other square cuts of similar dimensions (SU533 to the S and SU549 to the N), one of which (SU533) also cuts the linear channel SU530 and the other of which (SU549) is in the same line. All four cuts must be related, but their function is uncertain.