In order to excavate trench for the main sewer pipe which connects the building with the cesspool we had to call for a serious mechanism. The pipe comes out of the building at a depth of 1.4 m and further down towards the cesspool to a depth of 1.6 m. A long time ago some other buildings used to stay on the part of the land which the pipeline passes through. These buildings were removed over time but solid stone foundations were left in the ground. Fortunately, this complication did not surprise the excavator operator and he honestly coped with the task. The trench is born. Now we will put backfill sand on its bottom and place the sewer pipe into the sand.