This oval earthwork, with its flat, grass-covered top measuring 36 metres northwest to southeast and 24 metres northeast to southwest, rises seven metres above the surrounding landscape. The base of the mound stretches to an impressive 62 metres at its widest point, and whilst a few trees dot the surface today, the earthwork remains largely open to the elements.

The defensive features of this medieval fortification are still clearly visible in the landscape. A fosse, or defensive ditch, curves around the southeastern and western sides of the mound, measuring 14 metres wide at the top and narrowing to four metres at its base. The inner depth reaches 2.4 metres whilst the outer depth measures 1.2 metres. At the southeastern end of the ridge, a shallow trench cuts across, potentially marking out a defended area roughly seven metres in diameter. This trench spans 13 metres at its widest point, with an inner depth of 1.2 metres to the southeast and a shallower 0.3 metre depth to the northwest.

Beyond the main defensive ditch lies evidence of additional fortification; a six-metre-wide berm runs outside the fosse, bordered by a slight bank measuring nine metres wide and just 0.3 metres high. This arrangement may have once formed a bailey extending along the ridge to the southeast, providing an outer defensive court typical of Norman fortifications. The proximity to the site of Galtrim’s medieval parish church, located approximately 115 metres to the north-northwest, suggests this moat played an important role in the area’s medieval landscape, likely serving as a manorial centre or defensive position for local nobility.