There is no route 23 in Pokemon gold but if you mean heart gold it is the north exit of indigo plateau south exit of route 22 and west exit of victory road.
route 23
In Route 3,4, and 23.
I think you go to route 23 and it will say to jump to route 28
You get Vullaby on Route 23
azelf is at route 23
In Route 3, 4, 23.
near 5th gym
A trainer in route 23 has a rufflet
TM35 (Flamethrower) can be found on Route 23 in Pokemon White 2.
April 23 2010
1
A lot.(^-^)