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go to denver
It opens a door to your life @(^-^)@
The card key in Pokemon Heartgold and Soulsilver is located in the Goldenrod Underground.
after you beat petrel,get the key from him,go to the place where you can dress up your pokemon,go to the place that say DO NOT ENTER,then use the key,go through it and get the card key from the real director,then you can go there
The Card Key can be found in Silph Co on the Fifth Floor.
There's no item known as the Darkness Key in Pokemon. At all.
You need to talk to the director again, visit a Health Centre and give the card key to the man wearing the hat, situated in the corner of the centre. He will then guide you to the eighth gym leader.
you need the silver wing key item
Use it to get into a buliding
i think a remake of Pokemon gold and silver
The card key is located on the 5th floor of Silph Co in Saffron City.
You get the key card from inside the Silph Co. and head to the 5th floor via the elevator.