You're going to want to pack the snow down to strengthen it... stomp all over it or hit it with your shovel. You don't want it to collapse on you once you're inside.
See if you can find a bunch of sticks or something in the rubble, about a foot and a half or two feet long. Stick them into the snow all over your snow mound. The sticks are markers, they'll keep you from making the walls too thin.
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You're going to want to pack the snow down to strengthen it... stomp all over it or hit it with your shovel. You don't want it to collapse on you once you're inside.
See if you can find a bunch of sticks or something in the rubble, about a foot and a half or two feet long. Stick them into the snow all over your snow mound. The sticks are markers, they'll keep you from making the walls too thin.