The Nicest Earthship I've Ever Seen! Earthip Biotexture - Passive Solar - Off Grid - Big Sky Montana

This is the nicest passive solar off grid earthship I've ever seen! I had a hard time finding info on this earthship, but my hats off to Michael Reynolds of http://earthship.com and Scott Maybee of http://ift.tt/2a2IgNU Located in Big Sky, Montana, this is an earthship design I'd like to model in Maine, seeing as it's holding up well to the cold climate. Still have a couple questions about why they design the front greenhouse windows on an angle... I don't see how you can leave the earthship for months at a time without brushing the snow off the windows. A taller roof line, with an overhang, seems like a better design option to me if you're not going to inhabit the earthship year round like I wouldn't. Other problems I see are deep snowfall piling up in front and around the earthship... This is especially a problem with the greenhouse frontage yet again, and seems like the foundation should be elevated to allow for 4-5 feet of snowfall to pile up and not interfere with sunlight if left unattended for a little while. Thoughts? http://youtu.be/DhEfwomLCGU