NPC (friendly)
Emerald Herald � You receive the Aged Feather from her.
Ancient Dragon � He gives the Ashen Mist Heart to you
Landmark/Switch
Zipline 1 � Leads to the bonfire.
Shortcut/Passage/Area
Shortcut � After you take the first zipline, climb to the very top and kick the ladder.
Descent � After you climb the stairs, when you see the knights: one with hammer and shield and the other one with sword, go left, walk over the small bridge and jump down.
Item
Twinkling Titanite � First, open the Shortcut! Below the location that you reach after you take the zipline. You return to the bonfire by using the Aged Feather.
Soul of a Great Hero � Requires you to jump off the second zipline at the appropriate moment.
Judgment Armor Set � Requires the Pharros' Lockstone. A Judgement Armor + Sunset Staff set. You need to use the Pharros' Lockstone on the ground - the items can be found past the illusory wall, in the chest.
Drakekeeper's Greataxe � Drakekeeper's Greataxe + Drakekeeper's Greatshield. You simply need to jump, here, off the tower, where the Dragon Shrine Priest used to be here
Titanite Slab � After you take the descent. In the chest on the left.
Third Dragon Ring � After you take the descent. In the tower guarded by the knight with shield and warhammer.
Petrified Egg � Guarded by a Dragonfang Villard/ Allows you to join the Dragon Covenant in Iron Keep (at Magerold's)
Crystal Magic Weapon � After you have obtained the Petrified Egg, walk onto the narrow cornice. The item is at the end of the cornice, in the chest.
Watchdragon Parma � - In the location with the Petrified Egg, behind the columns, in the chest.
Rare opponent/Boss
Dragon Shrine Priest
Invasion: Dragonfang Villard � After you take the descent. At the very top of the tower.
Optional boss - Ancient Dragon
Trap
A TRAP (MIMIC) � After you take the descent: the chest on the right. Drops the Washing Pole (Petrified Something in the NG+) and the Petrified Dragon Bone.