Idaho Code § 47-1001: Right to cross located claim.

Any person or company who has or who may hereafter have a tunnel or crosscut, the mouth of which is located upon his own ground or upon ground in his lawful occupation, shall have the right to drive and continue the same through and across any located or patented claim in front of the mouth of the tunnel, but not to follow or drive upon any vein belonging to the owner of such claim.