E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Marcley Hill (Herefordshire),
on February 7th, 1571, at six oclock in the evening, roused itself with a roar, and by seven next morning had moved forty paces. It kept on the move for three days, carrying with it sheep in their cotes, hedge-rows, and trees; overthrew Kinnaston chapel, and diverted two high roads at least 200 yards from their former route. The entire mass thus moved consisted of twenty-six acres of land, and the entire distance moved was 400 yards. (Speed: Herefordshire.)