Thanks for posting.
Looks kinda like a Wickiup or hoghan or even a close to an Eskimo sod shelter.
Regional adpatations
http://www.mnsu.edu/emuseum/prehistory/settlements/
For the DIY types, see http://www.shelterpub.com/_shelter/sss_book.html
Actually, a flying elephant let go with a giant turd, and it buried a circus clown. The soles of his shoes can be seen to the right in the picture. That aborigine guy just hollowed out a living space after the stuff dried.