In the original Pokemon Gold, you cannot access the Safari Zone.
After you beat the Elite Four you are able to travel from the Johto region into the Kanto region from Red and Blue (and Green in Japan I think). You can find the Safari Zone in Fuschia Town (the town at the south end of the cycling road) I believe, but you can't go inside, you can only see the outside.
I heard that the reason for this is that the game would be too large for the cartridge if the Safari Zone was added so Nintendo/Game Freak had to give it "the cut".
I'm not sure if this is the same for Heart Gold as I haven't played it before.
in the safari zone
The safari zone in pokemon leaf green is in fuchsia city.For pokemon fire red it is also in fuchia city.
safari zone
In the safari zone
In the safari zone
In the secret house in the safari zone.
Safari Zone
you just go to the zone thats all
The Saffari Zone is in North Fucshia City
You don't keep Safari Balls. You only have them in the Safari Zone.
In fuschia city, in the safari zone. Go to the very end of the safari zone and your prize is Hm surf
In the safari zone