Visited yesterday. The larger barrow is extremely overgrown with brambles and several small trees. It is difficult to see where it begins, but I would estimate around 30-40 feet in diameter. At the centre it reaches a height of 5-6 feet. I remember it being a much more impressive feature a couple of decades ago, very visible from the road when driving past, before it became as scrubbed over as it is now.
There is a drawing of this barrow from 1783 on the British Library website, just behind Rose Cottage with a large ash tree growing on it. bl.uk/onlinegallery/onlineex/topdrawings/a/largeimage85779.html
The tree is also visible on the Harcourt Masters Turnpike map of 1786/7, where mound is shown as a very prominent feature. The other two barrows are not shown on the map.
The largest of the confluent round barrows in the field is around 3 feet in height, the smaller one to the NW is around 2 feet.
The field is marked on the 1841 tithe map as ‘Fair Close’, presumably this was where the Lansdown Fair was held.