Hopping on one of the orange balls with the correct tool equipped will begin a specific animation and sound. The longer the avatar trowels, shovels, and picks, the more chance they have to uncover an artifact:
Torin found some very tiny shards of a glass vessel.All items can be taken away by the avatar.
Torin found some tiny bits of pottery.
Torin wonders if that is gold glistening in the corner of the spoil.
Torin has found a tiny statuette!