Instructions
Travel to the Temple of the Ancestor Moths. It is located at the far-east end of the Jerall mountain range, just northeast of Azura's Shrine.
Enter the Temple and make your way through the dungeon, killing enemies and healing yourself as needed. At the end of the dungeon, you will find a door that will take you to the Caverns of the Moth.
Enter the Cavern.
Make your way through the Cavern to the door at the far end. There will be a few traps of various kinds that you should avoid, as well as a couple of auto-leveled enemies that must be killed before you can progress.
Save your game at this point, as the fight behind the door to the Shrine of the Moths is a tough one.
Enter the Shrine. There is a single enemy here, the Blind Monk, as well as a trap that fires an ice spell at you whenever you approach. Kill the Blind Monk and loot the body; he will have either an amulet or the Ring of Iron Fist on his body. If you do not find the Ring, reload your saved game, and kill the Blind Monk again until he drops the Ring.