its in goldenrod at next to the poke center (3rd gym)
You can't. Since you can get in Saffron immediately, you don't even need it.
You can't mine underground in either Pokemon Heartgold or Soulsilver, but you can mine underground in Pokemon Diamond, Pearl, Platinum.
Complete the quest (underground path/underground basement) in that same city (south) check online for further details.
the underground path. it's near the radio tower. go all the way to the right, there should be a room where a guy can take photos of your pokemon wearing different accessories. if your'e talking about photographer cameron, he should be in the underground path.
ice path
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.
Violet City, IIlex Forest, Ice Path, the Underground in Goldenrod. That's all i can remember.
The card key in Pokemon Heartgold and Soulsilver is located in the Goldenrod Underground.
No. The underground is only in Pearl, Diamond and Platinum.
in backtorn city
Whirlpool is in ice path.
on the way to blackthorn?