Once in a while I actually wish I did have cable.  I'm just finishing up season one on DVD from Netflix.  Pretty cool, for TV.  
I really hope the ghost of Stalking Wolf visited him sometime between the end of season 1 and the start of filming of season 2 and told him "Go watch brother squirrel."  If Les would build a better shelter, he would be a lot warmer in these cold environments.  
I'm forced to assume the method to the madness is that an open shelter and a blazing fire make a better show than a static shot of a boring totally enclosed debris hut/mound.  
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 - Tom S. 
"Never trust and engineer who doesn't carry a pocketknife."