There is a proposal by The Stone Rows of Great Britain website that the row of small stones on top of Hawk’s Tor are a rare type of stone row. 5 stones up to 1m high have been carefully wedged into a rock crevice. This 5m row of stones runs from SE to NW. The stone row aligns with a prominent notch in an adjacent tor stack to the SE.
According to their calculations the midwinter sun viewed from the NW along the stone row will rise in the base of the notch.
The Stone Rows of Great Britain report (go to Links) gives a detailed survey of the site.