Years ago as a kid we stopped off at what I remember being some sort of burial site. I always thought it was Sutton hoo but have realised that’s mounds and this was a big dip?
Iirc there wasn’t much to see……big circular/oval dip you could walk round the perimeter top. There may have been some sort of wooden steps to get to the top. I don’t remember there being other people there so maybe not a very popular place but I think there were information boards so fairly official.
I’ve tried googling but no use, not helped by the fact I can’t remember where it was. We were travelling back to the East Midlands from holiday and if I had to bet I’d say it was south of the East Midlands. Holidays I can remember going to at that age are Dorset, cotswolds, Suffolk and Wales…..so I’d suspect it was heading home from one of those.