A remarkable collection within such a small area. The first two long barrows may be unique as they were built within a few metres of one another (Although see Milston Down nr Bulford http://www.wiltshire-web.co.uk/history/barrows.htm )
Sadly time has not been kind to these monuments, most are badly damaged or only visible as crop marks. However the loss of the first two is unbelievable, the raised bank of the army firing range (The butt?) was dumped straight on top of them! Even to have put it a few metres to the E would have avoided this wanton damage.