Check out that headroom! Actually, I probably got a little too enthusiastic about digging out the quinzee's floor during my shift, and must have lowered it a good foot or two. All this did was make it chilly -- at night, nice cool air came in through the door, and warm air rose through the vents up top, giving us a nice steady breeze. We plugged the door the second night; rumor has it that the experts build these things with raised floors for additional warmth.