Quinzy
One of my sons built a quinzy this winter. You don’t need to be a ‘kid’ to play in the snow. 😉 He didn’t make it with the elevated floor so when we had some (unseasonably) melting temperatures, the floor of the quinzy had 4 inches of water! The whole thing also shrunk slightly. Now it is frozen again and this is what the entrance looks like if you get down on your belly, which I did for you to take this picture. 😀
Prairie Sunrise Homestead 
This is just beautiful! I’ve only seen enough snow to make a quinzy once in my life. We thought we might get a dusting today, but it passed us by, only coating the nearby mountain tops. The crystals in your photo are stunning.