Molten Cave is just above the Dwarven Hollows.

Chests (8):

• Antarctic Wind (x2)
• Phoenix Down (x2)
• Freezing Blade
• Hi-Potion
• Impact Claws

Jobs:

• Ranger
• Knight
• Scholar
• Geomancer

Exit the cave after defeated Salamander through portal (World).

Chests (15):

• Ottershroom      
• Gauntlets           
• Scholar Robe     
• Scholar Hat        
• Knight Armor      
• Phoenix Down    
• Heroic Shield      
• Elixir
• Killer Bow
• Gold Needle
• Book of Fire
• Book of Ice
• Book of Light
• Phoenix Down
• Gysahl Greens

Okay, you are done with the Dwarven Hollows yet. There are ton of treasures waiting for you there.

1. Go back to the Dwarven Hollows, take a few steps and watch a show (1).
2. Talk to the dwarf guarding the Fangs (2) again, he will give you a Magic Key as a thank you token.
3. Now talk to another dwarf guarding the basement (3), he will open the basement for you, there are 13 chests in there.