Cloak of the Landshark

This heavy cloak is fashioned from the hide of a bulette, complete with the creature's distinctive dorsal ridge running down the back. When you pull the hood up and crouch (swift action), you can burrow through loose earth, sand, or gravel at a speed of 20 feet. While burrowing, you gain tremorsense out to 30 feet, allowing you to detect creatures and objects in contact with the ground. You cannot burrow through solid rock, and the tunnel you create collapses behind you. You can breathe normally while underground.