Hello! Well i see you don't like the dark cave in pokemon gold, crystal and silver.
Acording to the 'game freak company', dark cave holds many rare items inside. When you
have finnished the game or done the 'ruins of alpha', there should be a secret area which
leads to the ruins. If i was you, i would explore the hole cave leaving a gap in your
party and find lots of rare items and pokemon. Besides its worth it because you can sell
the items!!! Hope i helped,
Flaffy11

No its the shortcut to blackthorn city...
But you need several tms and hms to get there...

Its dumb the onley good pokemon there for wifi is wobafet