An extensive prehistoric and Roman period field system lies west of Nether Houses, above the Wind Burn, and is associated with two settlements and hut circles. The field system includes long field walls, which survive as low stony banks running down the hillside. Other shorter lengths meet these long walls at right angles dividing the area into small fields. Some of the fields nearest the settlements have traces of prehistoric cultivation, known as cord rig. This is a Scheduled Monument protected by law.