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The Questionable Tunnels are a group of caves located in the Gravity Falls Valley mountains. It is unknown how they formed.

Location[s]Edit

The tunnels connect to the Pain Hole seen in Dipper vs. Manliness, but it is unknown if it conects to the multibear's cave. A smaller part of the tunnels connect the creek behind the Mystery Shack to the Falls via an underground waterway.

HistoryEdit

The tunnels have been seen in Danger For Breakfast where Mirra is seen falling into them and encountering a gigantic worm, and mentioned in A Dipper In The Hand.

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