Okay on TOB, somebody posted a link called
www.Findingbrokeback.com. Jack's death was filmed on Rainbow Road in Alberta. Earl life ended near Dorothy, Alberta.. I know the commenter says something about the irony of the place names of where the actual filming took place. Evidently, it's pretty hard to get to Rainbow Road. Here's the main link which can connect to the two locations.
http://www.findingbrokeback.com/On the left hand column, there are many options to click on. I clicked on search. Then, I typed Earl. It pulled up two links. The Chapter 12 link is a photo of where Earl's body was discoverd. The Chapter 17 link is a photo of where Jack was killed.
I found both photo's, particularly the site of Jack's death, quite unsettling, even though I know there fiction.
If your planning a BBM trip, this website seems to have the information you need. They also have photo albums that ppl posted showng them at many of the film sites including the final blowup.