This is a ring-ditch, the buried remnant of a roughly circular prehistoric enclosure whose filled-in ditch, cut into the subsoil long ago, causes the grass or crops above it to grow at a slightly different rate from the surrounding soil. On a dry summer, that difference in moisture retention turns the field into a kind of slow photograph, with the buried feature printing itself in a darker or lighter stripe across the crop. It is the kind of monument that rewards patience and altitude rather than a walk around the perimeter.

The ring-ditch at Newtown was identified from an aerial photograph referenced as GB90. BY.03, which captured its cropmark during conditions favourable to this type of survey. Ring-ditches of this kind are generally associated with prehistoric burial or ritual activity, often interpreted as the ploughed-out remains of a round barrow, where the surrounding ditch once defined a mound or ceremonial space. The Newtown example is not alone in the field; the notes compiled by Geraldine Stout and updated by Christine Baker record that it is just one of four monuments within the same large open space, suggesting the area held some significance across an extended period rather than as the site of a single event. The circular form was still legible on Bing Maps satellite imagery as recently as October 2013.

Because the monument survives almost entirely as a subsurface feature, there is nothing to see at ground level in the conventional sense. The field lies behind Newtown Caroline, which gives a rough orientation for anyone trying to locate the site on a map. Aerial imagery, whether via satellite mapping tools or georeferenced historic photographs, remains the most practical way to appreciate the form of the ring-ditch and its relationship to the other monuments nearby. The cropmark effect is most pronounced during dry spells in late spring or summer, when differential soil moisture has the greatest influence on plant growth. Anyone with an interest in aerial archaeology would find this a useful example of how a buried landscape can remain decipherable centuries, possibly millennia, after its physical form has been reduced to nothing visible at the surface.