Trethinna Camp
DTM- (Digital Terrain Model, i.e. No buildings or foliage) Partially ringed by trees & atop a hill overlooking the village of Polyphant to the SE lies the (possible round) univallate contour hillfort, Trethinna Camp. Heavily ploughed-out but still extant. Entrance may be occluded by field boundary. Last field investigation in 1988. No recorded finds or excavations, hence undated. Iron Age tribal association (conjecture based on location): Dumnonii (Scheduled Monument) [Any descriptive text attributed to the Atlas of Hillforts & Historic England websites]