I just returned from a north to south Alaska bike tour that we termed the Black Artery of Alaska because we were following the Trans-Alaska Pipeline from source to terminus.
Instead of a trip write-up I opted for letting the photos and captions tell an incomplete story and let imaginations fill in the blanks.
Slideshow can be found here:
http://www.groundtruthtrekking.org/slideshows/black-artery-of-alaska-2/Bjørn