Trepanning is a village in Cornwall so isolated that it is located a short way from the outskirts of itself.

It does not appear on any official maps – except its own – and no roads lead in or out of the village. It is an independent village-state with a population of less than 1,500 and borders built from elliptical quantum formulae so twisted that they make immigration not only difficult but also perplexing and unaccountable.

Trepanning is the world centre of weird science and curious phenomena.