The excellent ‘Hampshire Treasures’ resource gives the following information – “Bell Barrow – Angle Down. SU462528. Grass covered mound 25m. across by 2.6m. high. Surrounding ditch. Probable internal cairn of flints. Subject to ploughing”. This is a scheduled ancient monument, no.331.
Plus “Angle Down. SU462528. Flattened mound of flints 15m. in diameter. Probable bowl barrow with indications of a ditch. Under plough.”