First you need to beat the dragon gym, then make sure you have a pokemon that knows surf, and go behind the gym, and surf toward the back wall, go into the cave, and there you are.
Dragon's Den or the Safari Zone.
the dragon master is in dragons den in blackthorn city
You must evolve Dragonair, which you get in the Dragon's Den.
in dragons den you can also catch dratini's in there
You must evolve Dragonair (available from the Dragon's Den; use super rod) to get it.
After you beat the gym leader in Blackthorn city. She will tell you to go there.
To get the Dratini with the move Extreme Speed in HeartGold OR SoulSilver Versions, you just need to pass the elder's challenge in the Dragon's Den, exit the Dragon's Den, and re-enter and talk to the elder again.
dragon denyou can find dratini by surfing in dragon's den in blackthorn city. (the city where you get the eighth gym badge)
If you are talking about the Dragon's Den in Blackthorn city,then you have to use the moves Surf and Whirlpool to get across. Then you can talk to the Elder.
You must evolve Dragonair (available from the Dragon's Den; use super rod) to get it.
after you and your rival have beaten her and lance in a tag battle, she will be in dragon's den between 6 and 10 am
Dragon's Den (Blackhorn City)