Kernoclis Bog and Kernoclis Brook:... In the southern part of the town of Unity there is a bog called Kernoclis Bog, and along the eastern border flows a brook or stream, which is never dry, called Kernoclis Brook. This bog and this brook are both referred to in the ancient deeds, where it is sometimes found spelled Knock-Wallis. The name is derived from the name of an Indian who dwelt in the forest on the borders of the bog when the white men first came to the region. The bog itself in the centre is muddy peat to a unknown depth, covered, except in places, with a thick growth of moss. In places the water shows through the surface and is never dry. A person standing on a mound of this moss can cause the surface of the bog for a long distance around him to wave like the waves of the sea, from which circumstance this part of the bog is called the "Shaking Bog." It contains about a thousand acres, and its borders are covered with a dense, dark growth, consisting mainly of spruce, fir and pine. In the winter it is the haunt of deer, as it is very warm, and the surface of the water holes in the "Shaking Bog" never freezes over."
James R. Tabor, History of Unity, Maine, 1916 p.49-50