In Shiny Gold which is a ROM hack of fire red. In SHINY gold version haunter evolves via lvl up the official Pokemon Community thread indicates so (http://www.pokecommunity.com/showthread.php?t=74447) in the Q&A near the bottom Zel did not specify at which level though.
homer tunnel
beat chuck. then talk to chuck's wife near the gym. she'll give you fly.
The road tunnel to Milford is called the Homer tunnel.
you go to goldenrod tow an you will see a tunnel that is like near the health center and u go through there
There are many "places" near the tunnel. Question should be more specific.
The Homer Tunnel was opened in 1954.
In the bin near the tunnel entrance.
It is near vermilon.
go to the lake near twinleaf their you will find the shiny evolved form of magikarp
The Homer Tunnel, piercing the Homer Saddle between the Upper Hollyford and the Cleddau Rivers,
go to the 3rd gym town and go in the under ground area there's a lady near the tunnel where you need to go to get the rocket key talk to her and you'll get the egg