Late medieval field system. In the course of fieldwork on Mull Hill in the early part of the 20th century, a number of linear stone boundaries were observed extending across the whole of the hilltop in a SW-NE direction (the grid reference refers to the summit of the hill). A smaller number of boundaries running perpendicular to this axis were also seen.


The boundaries coincide noticeably with land divisions recorded in Woods' Atlas (1867) and based on earlier estate plans surveyed during the first half of the 19th century. The land division system on the Isle of Man is generally considered to have its origins in the medieval period. Despite its moorland appearance, the whole of Mull Hill appears ultimately to have been included within this system, rather than serving as common land, though this may have been its earlier status before enclosure.