The Claw Viper Temple is hidden deep in the Valley of Snakes beyond the Lost City. It is the location of the Tainted Sun Altar, which can be found on the second level, guarded by Plaguewrath and its pack of Poison Spitters.

The evil shrine was somehow responsible for perpetually eclipsing the sun; its destruction is required for the completion of the Tainted Sun quest and will also award the player with the Amulet of the Viper, a component of the Horadric Staff.

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