Cwm Pwcca

Cwm Pwcca is an enchanted valley in Gwynedd flanked by a crystal clear lake at one end and the Y Wyddfa massif at the other. It is inhabited by witchcraft-practicing dwarf race Y Dynan Bach Têg.

Trivia
Fragment of the description of the valley from Fairy Legends and Traditions of the South of Ireland by Thomas Crofton Croker: