Here in the Ozarks, there are still a few people that use a spring house. My uncle used to use a cave on his property to store milk before it was picked up by the dairy. If you go for a springhouse, remember the smaller and better insulated, the better. My grandparent's was about 4 feet square.When I was a kid, I remember what was called "Spring Houses" These were small buildings with troughs running through them that were fed by a cold water spring. If you have a cold water spring on your property, build a small Spring House for your cooling needs.