Before the FAYZEdit
Before the coming of the FAYZ, the mineshaft was used by Hermit Jim to mine gold. It is believed that when a meteor struck the nuclear power plant the Gaiaphage came to the earth, feeding on the uranium from the plant. It is unknown how or why the Gaiaphage later entered the mineshaft.
During the FAYZEdit
In Gone, Lana travels here during Gone, where she encounters the Gaiaphage and the coyotes.
In Hunger, Lana travels to the mineshaft in an attempt to destroy the Gaiaphage, but she fails to do so. Later in the book, at the end of the mineshaft battle, Sam, Caine and Duck travel down into the mineshaft, and Duck uses his powers to send it down to the bottom of the FAYZ, killing himself in the process. Dekka also uses her powers to destroy the entrance to the mineshaft.
In Fear, the Gaiaphage finally leaves the mineshaft.