Well, I'm sure u can physically see it, but u have to finish lake of rage stuff before the guy bloking it is gone.
in poo land.
The Mahogany City gym leader is not in Cianwood. He is in the gym in Mahogany, not anywhere else.
The seventh gym leader is Candice, the Ice Type leader. She is at Snowpoint City.
The 7th Gym Leader is in Mahogany Town.First you need to go to Lake of Rage and use surf to either catch or KO the wild Red Gyardos, Then you need to talk to the guy next to the Lake of Rage sign with the orange pokemon. After he will fly to the house next to the weird shaped tree in Mahogany Town. Walk in there and you will find him again talking to a guy who finds a staircase to Team Rockets HQ. To get to Team Rocket's leader you can find how to on youtube
Mahogany Town. East of Ecruteak City.
You can find it once you enter Gengar's heart. To find it go to Drakfol Cave and go deep inside. There you will find the 7th gym. I would take some rock Pokemon for the leader.
You find him when you go to iccirus city
There in the gym in mossdeep city by the way the gym leader are actually gym leaders.
You need to defeat the mahogany gym leader then prof.elm will phone you and then defeat team rocket
The seventh gym city is in Snowpoint City, you have to go in Mt Coronet and find the way out to route 216 and go to route 16 until you find Snowpoint City. The Gym Leader is Candice the Ice type leader.
You can find the TM Thief in the Team Rocket hideout in Mahogany Town.
The seafoam islandsby super aj