In both heart gold and soul silver, you are unable to go to the underground, you can however go there in Pokemon diamond, pearl, and platinum.
You cant. Sorry!
The Underground is unavailable in HeartGold and SoulSilver versions
You cannot go underground as you were able to in Pokemon Diamond and Pearl. You are stuck above ground in Pokemon SoulSilver. You get two regions to go between, though.
No. The underground is only in Pearl, Diamond and Platinum.
You can't mine underground in either Pokemon Heartgold or Soulsilver, but you can mine underground in Pokemon Diamond, Pearl, Platinum.
You go to the Underground area of Goldenrod and go to the door that was locked. Then you save the Director of the radio station.
go to goldenrod city and go to the underground tunnel a look around and there is a team rocket grunt there he will give it to you
The card key in Pokemon Heartgold and Soulsilver is located in the Goldenrod Underground.
Underground in Goldenrod City.
There isn't one.what you need to do is go to the photo booth in the goldenrod underground and take one of the rocket outfits.
It is in the underground tunnel
go into the underground. you will dress up as a team rocket member. then just walk in to the tower.
you can't get underground in soul silver. if you're looking for stones trade Pokemon from diamond, pearl, or platinum holding them.