Dwarfs' Mine

The Dwarfs' Mine (ドワーフ鉱山, Dowāfu Kouzan) is a location where fairies live and a mine has various magic crystals. According to Crowley, the mines have been closed for a while, and it's very possible it is exhausted of crystals. This location was introduced in Prologue 14.

History
Dwarf's Mine was a place where residents used to live in Dwarf Cottage and work at the mine until, for unknown reasons, the mines closed down and Dwarf Cottage deserted. Since the incident, there are creatures who reside in the abandoned Dwarf's Mine protecting crystal stones.

Silent Woods
The Silent Woods (静寂の森, Shijima no Mori)

Dwarf Cottage
The Dwarf Cottage (ドワーフの小屋, Dowāfu no Koya)

Trivia

 * The Dwarf's Mine shares the same name from the 1937 film Snow White and the Seven Dwarfs's Dwarfs' Mine.
 * The Dwarf Cottage is similar to the Cottage of the Seven Dwarfs from Snow White and the Seven Dwarfs.