River Mole in 1613. In John Speed's 1611 map of Surrey this stretch of the river is denoted by a series of hills accompanied by the legend "The river runneth under". However the river's name is unlikely to have derived from this behaviour: The "Oxford Dictionary of English Place Names" suggests that "Mole" either comes from the Latin "mola" (a mill) or is a back-formation from "Molesey" (Mul's island). In John Rocque's 1768 map of Surrey, the name "Moulsey River" is used. In common with much of the rest of the Weald, the earliest evidence of human settlement along the Upper Mole
De Hiemerter Mole, Burgwerd diesel engine was removed in the mid-1970s and an automatic pumping station built. In 1973, the mill was bought by De Hollandsche Molen. In 1976, the mill was restored to working order. On 16 May 1988, the mill was sold to Stichting De Fryske Mole (English:"Frisian Mills Foundation"). "De Heimerter Mole" is what the Dutch describe as a "spinnenkopmolen" (English: "Spider mill"). It is a small hollow post mill winded by a winch. The four Common sails, which have a span of , are carried in a wooden "windshaft". The "windshaft" also carries the "brake wheel" which has 29 cogs.