After study this cut (SU 567) is interpreted as relating to the construction of a hut. It is aligned with SU 530 and 615 and this set of features can be interpreted as the foundation trench and settings for upright posts that would form a hut or another small structure.
Square cut in the bedrock (posthole?) with the W and S sides eroded completely away to the level of the bottom. Aligned with two other square cuts (SU566 to the W and SU568 to the E) and very likely related to them. The arrangement of three square cuts in a line is very similar to the three square cuts just SW of here (SU533, SU547, SU549) and the dimensions (length and width) of all six are also very similar. Spaces between SU566, SU567, SU568 is ca. 35cm; spaces between SU533, SU547, SU549 is ca. 45cm.