The workers had to install a 70-metre tunnel across the A12 highway in the Netherlands. But there was a problem: they had only three days to complete the mission.
It would be certainly impossible in many countries around the world. Yet, not for the dutch. The construction company Heijmans managed to do it in one weekend.
They worked day and night, putting up with heavy rains and violent winds, to finish the job causing a minimal disruption. They used four cranes to demolish the road, then they slided in the tunnel, and finally they paved again the highway.