If you are walking onto here from the north (from the Gregory Chapel summit), the last few hundred metres are on no path. Nay bother: it's just on grass, but the path is just not there.
On Hugh Seat (689m), or more precisely very near it, there is Lady's Pillar, a column of cut stones. "Lady" refers to Lady Anne Clifford, who was the Lady of the Manor of Mallerstang (17th century). The pillar was erected to commemorate Sir Hugh de Morville, her predecessor: he was one of the four knights responsible for the murder of Archbishop St. Thomas Becket in Canterbury Cathedral in 1170. Oh, dear.
This area is also where River Eden has its beginning before becoming the huge river downstream.