How to build an Igloo

This is in the front yard of a small business in Silverlake that is nestled between apartment buildings. The guys that own the place always have cool installations out front. The latest is an igloo built out of material that can be woven together. It looks more like a tepee than an igloo because of the wooden poles used to frame it, but it's still pretty impressive. Perhaps they would be interested in building some smaller ones for the Igloo Tornado show in February?