If I’ve been looking in the right place on Google Earth, if you mean with Goldacre Lane to the west and Dean Lane to the east it looks more like a natural scarp outcrop to me.. but I could be wrong.
The latest iteration of Google Earth satellite images where uploaded, sadly patchy at the moment, are fascinating though. Hours of study await those interested. I’ve been meaning to post this as a separate topic… I’ve found new sites recently but they’re probably later than TMA’s timeframe. If you zoom in and out there certainly are very old field boundaries revealed around where you have been looking. Perhaps cross referencing with the OS Map for near as dammit coordinates might help with ID.