The Crown of Horns is a mystical artifact considered the most guarded secret of the dragons. Humans know very little about it themselves. Touching the Crown of Horns alerts the Dragons. It seems only the highest of the Disciples of Venu know about it, and even then they know very little. It is a honey-gold crystal. Fone Bone and Thorn both recived from the Dragons a tooth made of Crown of Horns crystal.
The Crown of Horns is hidden deep in Tanen Gard. It believed to be the center of the earth itself. It sits directly between the veil between the Earth and The Dreaming, and is considered a balancing point.