I can form anything that is related to earth (dirt, stone, metal, crystal and lava). Can form tunnels under ground and even under the sea. And I am able to sense my surroundings underground (as long as I have my hammer of course). But I can only do this when I have courage and truth. If I refuse to do what is right, it will turn me into dirt slowly. Unless I confess, gain courage over fear and/or make things right.
Soo, I can just form a tunnel under the lake and get to your place. But I am going to hold back (for now. mad scientist laugh)