I would also say Alaska, but don't have the foggiest idea where exactly...

Wrong on both, It's far north of Vancouver, but not all the way up in Alaska.

Leaving Prince Rupert

Nope but pretty close! More Southeast.

Stewart/Hyder?  Scratch that - had my BC geography turned around.

 

Terrace?

 

Scott

Bella Coola??

 

Scott

No and No. It's a mining strip deep in the mountains.

I tried nearly every place,but no chance.No clue!

 

Scott

Another clue Maestro!!

Iskut River Mine?

Wow! Alright here's the clue that should give it away. It's nestled between two mountains, one named Mt. Whitemantle and the other Mt. Klattasine.

Campbell river(YBL)?

Nope.

Port Hardy?

Nope, much more east