From A Wiki of Ice and Fire
Stonedoor is a castle along the Wall, abandoned by the Night's Watch. To the west lies Greyguard and to the east Hoarfrost Hill.
A Clash of Kings
Lord Commander Mormont planned to re-garrison Greyguard, but Qhorin Halfhand advised Stonedoor instead, due to Greyguard's poor condition.
A Storm of Swords
Jon Snow is with a group of wildlings who attempt to climb the Wall between Stonedoor and Greyguard.,
A Dance for Dragons
Jon Snow gave Stonedoor to Soren Shieldbreaker to garrison and settle his own people. Borroq was scheduled to join them.
References and Notes