you can't get underground in soul silver. if you're looking for stones trade Pokemon from diamond, pearl, or platinum holding them.
You can't mine underground in either Pokemon Heartgold or Soulsilver, but you can mine underground in Pokemon Diamond, Pearl, Platinum.
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.
The card key in Pokemon Heartgold and Soulsilver is located in the Goldenrod Underground.
No. The underground is only in Pearl, Diamond and Platinum.
Underground in Goldenrod City.
It is in the underground tunnel
its in goldenrod at next to the poke center (3rd gym)
It's in the Goldenrod City Underground, but she's only there on the weekend
You can't. Since you can get in Saffron immediately, you don't even need it.
They team rocket member in Pokemon Heartgold and Soulsilver has to be there no matter what.
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.
no you can trade soulsilver pokemon to black