The book you recovered explains how the Dwarves kept their treasure in secret vaults: each one marked by a stone guardian. As you explore the mines, you find what looks like a doorway blocked by the statue of a Dwarf sentry. One of the guard's eyes is a glittering gem, but the other socket is empty. Perhaps if you can find the missing gem you could open the hidden passageway...

When Revealed: Shuffle the encounter discard pile into the encounter deck and reveal 1 encounter card per player.

During the travel phase, the players must travel to a location, if able.

Forced: After resolving the Discover keyword, if no Hazard card was revealed by that effect, reveal the top card of the encounter deck.

Forced: When this stage is defeated, if Blue Mountain Gem is attached to a hero advance to stage 4A. Otherwise, advance to stage 3A.