In the predominant majority of cases, it is laid out of a special material called bottleneck, and at the same time have slightly higher than the general level of earth. Then, a basement device is formed from ordinary bricks, it must certainly be somewhat thinner compared to the foundation itself. In order to make full ventilation of the underground in the basement, there must certainly be special holes, but at the same time they themselves must be located at such a distance at which any rodents or water will not be able to penetrate them. In certain cases, such holes can be completely closed using a metal grid. In the winter time, ventilation should be completely closed. Directly around the entire foundation of the country house, a specialized blind area is formed, the slope of which is directed from the house.