sentences:  This dates the knife to being contemporary with the construction of the Stonehenge trilithons, and suggests a treasured antique or heirloom, buried along with the rich new items of the occupant of the barrow.It is not known why this barrow contained such rich grave goods compared to those around it.It occupies the highest point, but is not the tallest barrow, and is not obviously marked out as the principal barrow in the cemetery.