Tal Rasha's Chamber

Tal Rasha's Chamber is the small chamber found in the True Tomb of Tal Rasha. The chamber has no direct access. To enter it, you must insert the Horadric Staff into the Orifice in the final room of Tal Rasha's Tomb, which will cause a small passage to open on the wall. It is the final area of Act II.

Lore
During the capture of Baal, the demon managed to shatter his soulstone. The remaining shards where not powerful enough to contain the demon's vile spirit. However, the Horadric mage Tal Rasha selflessly volunteered to serve as the soulstone's extension; he would bond with the demon before being stabbed with the remaining shard of the soulstone, hoping to use his body as an extension of the soulstone Baal had fragmented. The soulstone acted as a lock that prevented Baal from leaving the Binding Stone.

Tal Rasha's body was set upon the Binding Stone inscribed with magical runes that no mortal could decipher. His spirit was left to wrestle with Baal's for all eternity. Eventually, Baal gained the upper hand, but could not free himself from the Binding Stone as he was too weak and first required the soulstone in his chest to be removed.

In-Game
After entering the zone, players are immediately beset by Duriel, the Act Boss.

The Teleport spell is restricted in this zone: It can be used to teleport around the two individual rooms, but not through the wall leading to the inner chamber in either direction, even after Duriel is killed.

After the player defeats him, the chamber opens up and the player can further explore Tal Rasha's Chamber.

Tyrael is present near the Binding Stone and will open a portal to Lut Gholein after being spoken to. There is no sign of Tal Rasha or Baal, however.

Though there are no additional monsters in the Chamber, the area is littered with large, black caterpillar-like insects. Walking over them produces a sickening crushing sound.

You cannot exit the chamber through the entrance. You can only get out by using a Town Portal or Tyrael's portal.

Trivia
A pair of murals, unique to this zone, are on either side of the entrance to the inner chamber. They depict a man in chains with a pointed red stone above him and blood dripping from his body. This illustrates the binding of Tal Rasha and the imprisonment of Baal within him using the Binding Stone and the shattered soulstone, though Baal's soulstone is yellow while Diablo's is red.