EH gives the following measurements for the barrows.
North – 12 metres diameter and .75 metres high with a 2 metre wide ditch on the south side.
Centre – 20 metres wide and 1.75 metres tall with traces of a 2 metre wide ditch.
South – 20 metres diameter and 2 metres high with traces of a 2 metre wide ditch.
location_on
photo
ondemand_video
forum
description
link