Blackrock Serpents

These three pieces of Blackrock, formed like serpents, are the key on the Serpent Isle to open the Wall of Lights in Spinebreaker, Skullcrusher and the Shrine of Balance. At the first two, the fitting Serpent has to be used. At the shrine of Balance however, all three Serpents are needed. The fates of these three Serpents is quite different.

Blackrock Serpent of Chaos
This one had come into the posession of the artist Andal in Monitor. Batlin stole it from him to activate the Wall of Lights in Spinebreaker. But since it was the wrong Serpent, he couldn't pass through the Wall. The Avatar took it after his death and used it first in Skullcrusher, and then at the Shrine of Balance, to open the Wall of Lights.

Blackrock Serpent of Order
This one had somehow come into the posession of a man from Pagan, who in turn died in a Goblin camp in Britannia (How? We don't know.). The Goblins gave it to the Avatar in Ultima Underworld II.

After arriving on Serpent Isle, a teleport storm exchanged it with Columna's stockings. Stefano of Moonshade, who had stolen the stockings, locked the Serpent away in his storge shed. Later, after defending Stefano from a Death Knight, the Avatar got the key for the shed and found the Serpent. He/she used it to activate the Wall of Lights at the Shrine of Balance.

Blackrock Serpent of Balance
This one had become the loot of the pirate Silverplate, who hid it deep in the icy north of the Serpent Isle. The Avatar found it after using the treasure map from the Inn of the Sleeping Bull. He/she used it at the Shrine of Balance to activate the Wall of Lights.