How to Build an Igloo Boys Life magazine. The best known snow shelter is the igloo. A brilliant use of engineering and resources, this simple dome made out of snow blocks is both strong and versatile. Arctic cultures such as the Eskimo and the Inuit developed it, and over time they came up with a hundred tricks to make the shelter more comfortable and sturdy, including making the entrance small to help keep heat in and melting the inside of the dome and letting it refreeze for increased strength. Downton Abbey Season 1 On Netflix. Diameter Not to exceed 1. Anything bigger would require a perfect dome, which is next to impossible to construct in the field. Materials Top layers of dry powder wont work. Pack mounds of snow until they harden, or cut blocks of snow from the depth where your feet stop sinking. Entrance Build a door in the ground, about 1. For proper ventilation, never seal or close the entrance. Walls Cut the blocks into a spiral layer, leaning one block against the next. Keep the interior wall smooth so moisture can run down the side of the wall, instead of dripping from the ceiling. Include a vent hole to allow for better circulation. How To Build A Better Boy Full Movie' title='How To Build A Better Boy Full Movie' />How To Build A Better Boy Full Movie FreeA brilliant use of engineering and resources, this simple dome made out of snow blocks is both strong and versatile.