Nether Abington is a well preserved 12th century earthwork motte and bailey fortress. Standing on the west bank of the River Clyde, the sub-circular, flat-topped motte is encased by a ditch and crowned by a modern stone memorial. Defended on the east by the river, a natural wide gully to the south and a marsh to the west, the motte is located at the south-east angle of the horseshoe shaped bailey. Encased by the remains of its earthen rampart and ditch, a western track cuts through the undulating but featureless bailey. The original entrance maybe the rounded gap on the south-west side and 19th century excavations of the motte discovered evidence of occupation. 2 miles north-east is Roberton and 4 miles south-east is Crawford Castle.