Lost Tunnel is a dark cave system beneath the Auburn Waterway that is only accessed during Mission #034: Island Saviour. The first time you explore it, you’ll only be able to see about one tile around you in any direction, but it will light up after the mission is complete.

There is an exit to the KBT Expressway here, as well as a lot of underground Pokémon.

Table of Contents

Lost Tunnel Map

(Click for full-size)
Lost Tunnel map
Points of Interest
Healing Chansey and Entrance
Diglett Attack
Golem Attack
Dugtrio Attack
Entrances and Exits from and within Lost Tunnel
North: KBT Expressway

Item Locations

Item Location Image
Aggronite In the northeast part of the tunnel maze, behind a smashable rock
Luminous Moss (hidden)
In the southern part of the tunnel maze, hidden in a rock in a dead end
Zygarde Cell In the southwest corner of the tunnel maze, in a dead end
Max Repel In the western part of the tunnel maze, behind a smashable rock

Wild Pokémon

Pokémon Method Time Rate
Graveler
Rock/Ground
Cave Day and Night 20%
Woobat
Psychic/Flying
Cave Day and Night 20%
Diglett
Ground
Cave Day and Night 20%
Dugtrio
Ground
Cave Day and Night 15%
Lairon
Steel/Rock
Cave Day and Night 10%
Geodude
Rock/Ground
Rock Smash Day and Night 90%
Graveler
Rock/Ground
Rock Smash Day and Night 10%
Diglett
Ground
Static Encounter During the Lost Tunnel exploration
Dugtrio
Ground
Static Encounter During the Lost Tunnel exploration
Golem
Rock/Ground
Static Encounter During the Lost Tunnel exploration
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