Dwars Rivier Watermill - Cederberg, Western Cape: Set in the beautiful Cederberg Mountains on the wine estate, ‘Cederberg’. A watermill powered by the Dwars Rivier was built on a farm near Clanwilliam, which was established in 1893. Cedar wood from the area was used in building the mill, which had a wooden overshot wheel of the compass type which was easy to transport and consisted of four cedar wood spokes mortised into the axle.