The fire canyon is behind the house of the farmer for whom you have
to herd the yakows
Climb up the stairs and you will find this area.
You can only start riding through the firecanyon once you collected 20 Powercells so Keira can power up the heatshield of the Zoomer.
Reach The End Of Fire Canyon
I hope I don't have to explain all that much for this to you, grab your
Zoomer and here we go. Of course you have to have collected enough power cells before, so that you
can start the zoomer. And actually here a YouTube video might come
in handy for you if you are having problems with this level.
Free the 7 Scout Flies
...please see Scout Flies - Fire Canyon