Why Japan Drills Holes in Brand-New Roads At first glance, it looks like Japan is destroying its own roads. 🛣️ Fresh concrete… and then holes everywhere. But it’s actually a brilliant solution. Workers place plastic cones on the ground, cover them with steel mesh, and pour concrete over everything. Once it hardens, they break the cone spots and turn them into small drainage holes. These holes are filled with stones or plants, allowing rainwater to flow directly into the ground. And in a country