Dragon's Den is a small fortress in the Western Edeni hidden away in a small grove on the western foothills of Kazarin Peak. It was built by the Lunar Kazarin Protectorate in 3E335 but fell into disrepair and ruin over the coming century. However, it was restored somewhat and returned to use near the end of the third era.

During the events of the Ashfall Revolution in 3E495, the fortress was used by Lunar Generals Dastan & Volgin to imprison the revolutionary leader Mikhail the Valiant.