I just finished reading Fibonacci's Lament (a dense, sprawling epic by Alan Kreller.) Briefly, it involves three friends, all in their mid 50's, who take a week long vacation to the Yukon to unwind with some fishing and relaxation. They rent the only cabin on a small island in the middle of Lake Yakima. Shortly after they arrive, a seismic tremor cripples the bridge that connects them to the main land and sinks their fishing boat. These friends (Anthony Fibonacci, Rudolph Dimrose and Colonel Tubman) are non plussed at first, but after it is clear that an immediate rescue is not forthcoming, they begin to plot against each other. It is four weeks before they are rescued. The soul searching that Daniel goes through after the rescue comprises the meat of the story.
Gripping. I can't recommend it, however. I found it fairly unrealistic. The knife fight by the hammock seemed contrived, for instance.
If you are truly interested in a riveting (and realistic) book on Canadian adventures, I recommend Vince Pullman's Dr. Bison. Mr. Pullman chronicles Randall Bison's bear hunting trips in the Northwest Territories in the Spring of 1921 and 1922. This book was an account of Dr. Bison's actual adventures and did not require a novelist handy turn of a phrase to capture the reader's attention. Dr. Bison went on to teach biology at Thunder Bay City College until his death in 1963.