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Route 42 is a route in Johto that connects Ecruteak City, Mt. Mortar and Mahogany Town.
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Gate to Ecruteak City (Gen II)
West entrance to Mt. Mortar (Gen II)
Central entrance to Mt. Mortar (Gen II)
East entrance to Mt. Mortar (Gen II)
There is a hidden Max Potion in this rock.
The left tree contains a Pink Apricorn.
The center tree contains a Green Apricorn.
The right tree contains a Yellow Apricorn.
In Pokémon Crystal, when Fisherman Tully is registered to the PokéGear, he might give the player a Water Stone when he calls sometimes.