Clay Road opens up when you have defeated the Elite Four. This cave, named after the Gym Leader, Clay, connects four various parts of Unova. To the west is Mistralton Cave, to the north is Twist Mountain, to the south is Driftveil City and to the east are the Underground Ruins, a subsection of Clay Road. To navigate around Clay Road, you need to talk to the various miners who will take you to the next room using their mine carts.

Special Moves used in Clay Tunnel:
Surf
Strength