And of course at the very end of the last series, Ray K and Fraser load up with tack and tallow, hitch up the dogs, and head out:-

Ah for just one time I would take the Northwest Passage
To find the hand of Franklin reaching for the Beaufort Sea
Tracing one warm line through a land so wild and savage
And make a Northwest Passage to the sea

Through the night, behind the wheel, the mileage clicking west
I think upon Mackenzie, David Thompson and the rest
Who cracked the mountain ramparts and showed a path for me
to race the roaring Fraser to the sea

How then am I so different from the first men to this way
Like them I led a sheltered life and threw it all away
To seek a Northwest Passage at the call of many men
To find there but the road back home again