Shortcut/Passage/Area
Shortcut 1 � After you climb up the stairs, on your right there is an illusory wall.
Shortcut 2 � After you have taken the first shortcut, you walk into a room with a ballista. It has been aimed at another illusory wall - you simply need to open it.
Belfry Sol (optional) � After you have used Pharros' Lockstone, you get to another bonfire and an optional Belfry Sol location. You can join here the Bell Covenant, obtain the Mad Warrior Set and Berserker Blade
Rare opponent/Boss
Boss - Smelter Demon
Optional boss - The Pursuer � After you defeat the Smelter Demon, walking into this room results in the appearing of the Pursuer. After you defeat him you receive the Ring of Blades +1
Boss - Old Iron King
Mad Warrior (Belfry Sol) � From time to time, (the odds equal 15%) the Mad Warrior (red phantom) appears here, who can drop the Berserker Blade or an element of his armor.
NPC (friendly)
Magerold of Lanafir � After you deliver the Petrified Egg (from the Dragon Shrine) you will be allowed to join the Dragon Covenant
Item
Human Effigy � Under the lava-flooded stairs.
Iron Key � You will be able to collect this key only after you shut down the bursting fire, at the very end of the Iron Keep.
Dull Ember (!!!) � The key element. You will be able to reach it after the bridge is lowered.
Phoenix Parma Shield � Inside the chest in lava.
Black Knight Greatsword � After you leave the Belfry Sol, before you jump back towards the bonfire,, examine the wall on the right: past the illusion, there are two chests. The Black Knight Greatsword is inside one of them.
Protective Chime + Grand Spirit Tree Shield � After you leave Belfry Sol, before you jump back towards the bonfire, examine the wall on the right" past the illusion, there are two chests. The Protective Chime and the Grand Spirit Tree Shield are in one of them.
Chaos Storm � In the chest in the lava.
Fire Seed � The item under the lava surface.
Black Knight Greataxe � From the location in which you encountered the mimic, continue on your path up: first by climbing the ladder and then over the stairs. You reach a location with three knights. After you defeat them, you will find the item in the chest in the corner of the location.
Covetous Gold Serpent Ring � In the location in which you found the Black Knight Greataxe, you need to jump down (by using the planks distributed along the way). The ring is at the corpse inside the cauldron filled with liquid iron. You simply need to fall down into the chasm, onto its rim and pick up the item carefully.
Trap
A TRAP (MIMIC) � It is necessaryto use the third lever. The plank that appears, allows you to reach the ladder at the other side of the room. After you defeat the mimic, you receive a fragment of the Dark Armor and the Lightning Winged Spear.
Bonfire
Bonfire � Eygil's Idol
Landmark/Switch
Lever 1 � Lowers a fragment of the bridge
Lever 2 � Lowers a fragment of the bridge
Hearth on/off � Allows you to start fire in the furnace
Lever 3 � Raises/lowers the plank in the middle of the location.
Ladder (!!!) � In the upper-left corner of the room full of fire traps, there is a ladder to the bonfire.
Fire on/off � Right next to the bonfire, you simply need to climb up the stairs. Allows you to disable the fire traps in the whole of the Iron Keep