CitadelAltaerein, the infamous former home of the Order of the Nail Hellknights, now fallen into ruin.
Citadel Altaerein, formerly a Hellknight fortress, stands just over a mile northeast of Breachill, at the end of a rocky but well-demarcated path that leads up the gradually sloping sides of Hellknight Hill. The path to Citadel Altaerein is known to be fairly safe.