XP Value: 1,600
GP Value: 8,000
This strange item appears to be a portable hole, although close examination proves that it merely creates passage or a hole through substances similar, but not exactly as per the 5th-level wizard spell passwall; therefore anything that prevents passwall may not stop the transport hole, unless it also prevents all forms of such travel. Thus a person could throw up the transport hole and jump through a wall of solid stone and then grab it back from the side he immerged from and continue on his way.