Bushy Park Barrow

I am really sorry to be negative, but this mound does not feel like a tumulus to me. It is more rectangular than round, and this part of the park was used as an US Air force base for a while from 1944. In fact the D-Day landings were planned from here by Eisenhower.
The ground around is littered with smaller raised areas. Perhaps where corrugated iron huts once stood.