Dig

Dig is a -type physical move introduced in Generation I. It has been TM28 since Generation I.

In Battle
Dig can target any Pokémon adjacent to the user. Dig allows the user to hide underground on the turn it is selected on, avoiding all attacks except Earthquake, Fissure and Magnitude, then attacks the target on the next turn.

If Earthquake, Fissure or Magnitude are used on the user while it is underground, the damage to the user will be doubled from what it would have done if the user was surfaced.

Outside of Battle
In Generation I, when used in caves, it transports the player to the last Pokémon Center they stopped off at. In Generation II and onwards, when used in caves, it transports the player to where they entered the cave.