Wikipedia
Duckmanton
Duckmanton is a village within the civil parish of Sutton-cum-Duckmanton, in North East Derbyshire, between Bolsover and Chesterfield. Duckmanton is a long scattered village, running North and South, usually designated Long, Middle, and Far Duckmanton, of which Middle Duckmanton is east from Chesterfield, and west from Bolsover.
In chronostratigraphy, the British sub-stage of the Carboniferous period, the 'Duckmantian' derives its name from the study of geological exposures in a railway cutting at Duckmanton.