First you will have to work on the pit, it should be the size of a slide and a depth of centimeters forty. Do not forget that the hill should be located under the slope. The lower part of the pit must be well tamped and filled with drainage, in the role of which sand, gravel or their mixture can act. The thickness of the drainage layer — about 30 centimeters. We pour the ground on top of drainage, but not simple, but a mixture of soil, peat and sand in a ratio of 3 \ 1 \ 1 \. If this seems difficult to you, then you can buy ready -made land for a hill in a store. The preparatory stage is completed on this.
