The Cave Under the Well

The Cave Under the Well is a zone, that can appear in Old Tristram Road in Act I of Diablo III.

It's a small area with some coins in the floor. Also, some chest or containers can be found in it. It will seem empty at first, but several rotting corpses will spawn. There is nothing special about this area but a player can clear it in a few seconds to get some gold, and it needs to be explored in order to get the achievement No Stone Unturned.