Powerful burst main has recently happened in St. Petersburg near the metro station Bolsheviks’ prospect. Some cars were flooded over bumpers, people had to wait for an hour till they were saved. The visibility was so insignificant that it was almost impossible to see even your hands. Some passers-by suffered burns, about fifteen people suffered injuries and about four were hospitalized on the gate. People simply couldn’t see where they went. Besides, clothes got wet through and people were in freezing temperatures.