Jacob in Russia

It is his second time in Russia, but now he is old enough to understand a bit more.
- Mama, Papa, what is it? - pointing at a hole on an asphalt pavement.
- It is a hole.
- A hole? Who makes such holes? Why they make them? How they make them? May I touch it?
At 3 years and 1 month old, it is a first time he discovered a hole in asphalt that is not a part of a fenced construction area :)