The village of Mad Stoat would probably be part of Lancre Town, were it not for the violent geography of the country. The horizontal separation is negligible, but in Lancre, horizon and horizontality are scarce, and the two villages are displaced vertically by enough mountain to discourage frivolous visits.
Either the dwarfs of Copperhead Mine are geographically beneath Mad Stoat, or close by, as they asked Magrat Garlick to examine the sword found with the infant Carrot Ironfoundersson and she was close enough to tell them how to stop spelling 'recommendation' in Guards! Guards! and was consulted on his most non-magical sword.
The stoat (Mustela erminea) is a small mammal of the family Mustelidae - also known as the short-tailed weasel and the ermine.