I just watched a documentary on this guy, Murray Fredericks.

Murray Fredericks Photography: CurrentExhibition

He is one patient guy. It looks like he spent a couple of week long stints over a number years in the middle of nowhere to take these images. If I remember what I heard, it was shot on 8x10 negatives.

I found some parts of the doco on youtube.
YouTube - Sol - me?unarodna konkurencija

MA check out the bike in one of the shots. It looks like Russes 10 dessert bike.