Crypt of the Ancients is a dungeon in the Festering Woods in Act I of Diablo III. A Rare elite Skeleton is always found inside.
The Nephalem must visit it on their way to Drowned Temple in order to recover one of the two Beacons. If Lyndon is present, he will comically tell player to give the relic to him for "safekeeping".
The Beacon is in the north-eastern corner. The southern section contains a chest and Tomb Robber's Journal.
This section contains facts and trivia relevant to this article.
Due to guaranteed elite pack, small size and availability this location (along with the Warrior's Rest) was widely used for farming in early versions of the game, until it was nerfed heavily.