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

Points of Interest | |
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Healing Chansey and Entrance |
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Diglett Attack |
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Golem Attack |
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Dugtrio Attack |
Entrances and Exits from and within Lost Tunnel | |
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North: KBT Expressway |
Item Locations
Item | Location | Image |
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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 |
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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 | |
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Graveler Rock/Ground |
Cave | Day and Night | 20% |
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Woobat Psychic/Flying |
Cave | Day and Night | 20% |
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Diglett Ground |
Cave | Day and Night | 20% |
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Dugtrio Ground |
Cave | Day and Night | 15% |
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Lairon Steel/Rock |
Cave | Day and Night | 10% |
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Geodude Rock/Ground |
Rock Smash | Day and Night | 90% |
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Graveler Rock/Ground |
Rock Smash | Day and Night | 10% |
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Diglett Ground |
Static Encounter | During the Lost Tunnel exploration | – |
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Dugtrio Ground |
Static Encounter | During the Lost Tunnel exploration | – |
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Golem Rock/Ground |
Static Encounter | During the Lost Tunnel exploration | – |
