From my brief inspection:
It is a gravelled track laid as a raised causeway across moorland with a gentle cross-slope with one or more drains beneath to allow water to escape. It climbs about 20 feet in the length of about 230 yards and its plan is a gentle reverse curve.
Judging by the age of the surrounding buildings I would estimate the track as being there for at least 300 years!
Buying an old tractor might be a solution. It could start a new hobby!