... the stupendous cleft in the rock between Swithamley and Warnford commonly call’d Lud-Church, which I found by measure 208 yards long, and at different places 30, 40, or 50. foot deep; the sides steeped and so hanging over, that it sometimes preserves Snow all the Summer, whereof they had signal proof at the Town of Leek on the 17 of July their Fair day, at which time of year a Wharnford Man brought a Sack of Snow thence, and poured it down at the Mercat Cross, telling the people that if any body wanted of that commodity, he could quickly help them to a 100 load on’t.
From chapter four of Robert Plot’s ‘Natural History of Staffordshire’ of 1686.