When I first read Greys account I felt I was there myself.
'The next part of their proceedings was to take the body of Mulligo from the females; they raised it in a cloak; his old mother made no effort to prevent its being removed, but passionately and fervently kissed the cold rigid lips, which she could never press to hers again. The body was then lowered into the grave and seated upon a bed of leaves which had been laid there directly the fire was extinguished, the face being, according to custom, turned towards the east. The women still remained grouped together, sobbing forth their mournful songs, whilst the men placed small green boughs upon the body until they had more then half filled up the grave with them; cross-pieces of wood of considerable size were then fixed in the opposite sides of the grave, green boughs placd on these, and the earth from the two side heaps thrown in, until the grave was completed; which then, owing to the heaps at the head and foot, presented the appearance of the three graves, nearly similar in size and form, lying in a due east and west direction.
I have left some of Greys description out just to keep this as brief but accurate as possible. The reader can read the full transcript for themselves.
In the cave which I found this symbol known to some as a 'Dillenger' was painted on the ceiling of the cave directly below the burial. You may notice 5 fingers on one hand and 4 on the other.