The Mighty Drizzling Rain

Each rainy season I see that a continuous sharp drizzling is mightier than a heavy downpour! Yes, after such a drizzling the blue metaled-roads in the city have pits - due to its bombarding action on the sand content of the roads. It levers out the sand particles and loosen the gravels. The heavy vehicles that ply on the road do the rest of the job - a pit is formed on the disintegrated road.