They have to dig a hole, put these in, there are different sizes you can pick from, I chose one that would seat 12-15 people. They put it in the ground, they anchor it, then they re level the ground back around it, but of course, they don't cover the top so you can open that and there's stairs to go down in, and just pretty neat. It would have been less if I wanted a smaller one, but I wanted a larger one. We can stand up inside of it, and there are stairs that going up, which go higher than that. It's just one room, there's bench seating all the way around three sides. Then where the stairway is there's places where you can stack water, well we have a baby over here so we keep the formula and things like that, bottles, and blankets, and pillows, and that sort of thing. There's room in there for that plus four people. We have been in it 3 times. The dimensions are 66 inches wide, 9 feet six inches long, and 6 feet 3 inches tall. They were tested by the US military to protect armed forces, they fired two by fours into them at like a hundred miles an hour, and I believe there reinforced fiberglass, and it won't penetrate, there just pretty good deals. I did ask them to come out early to help me pick a location, and they kept putting me off, and they never did, it ended up in a location I'm not, well it's okay, I mean, I'm glad it's there, but it's not ideal. I'm happy with the shelter, I just wanted it closer to the house than it ended up being. They do need to respond to customers and they need to go out early to pick locations, because they have to avoid things like if you have a septic tank, they have to avoid the field, all kinds of issues as far as locating it correctly, and they need to go out ahead the day that it's delivered and get it determined.