no you either go through the cave, or get action replay and walk over the cave into the city. if you need help with the game go to cheatcc.com, it has the whole book for the game. It got me through the whole game! seriously
when your on your way to blackthorn city i think
There is no ship in Blackthorn City.
the blackthorn city is in the very north east city
In the gym at the end of blackthorn city, of course.
It is at he way to blackthorn city
you beat the gym leader
There is a homonym "sloe" (the fruit of the blackthorn tree)
In Pokemon sousilver (I don't know about heart gold )you go to blackthorn city which is located in blackthorn city right across the blackthorn city's gym.
you have to get to blackthorn city first
its on blackthorn city
Nope, you cannot dig into or through anything in order to reach Blackthorn City, you have to go through the Ice Path in order to reach Blackthorn City.
You don't unlock, Blackthorn city. You go through the Ice path and then your there.