Your pole kit description says it may need no digging. How does that work

Our pole kit comes with a slightly larger-in-diameter base pipe that is four feet long. In most areas, you should be able to drive this section about two feet into the ground, tamp the soil around it, and then drop in the 8’ assembled piece that will hold the nest box in the air. It is a quick and easy install. However in areas of very rocky ground, digging a hole and filling it with cement may be the only solution.