By bne Tehran bureau Iran’s northern Khorasan and Gilan provinces have been hit by a heavy rainstorm and mega hailstorms in the latest of a string of flooding incidents in the usually arid country, Asr Iran reported on May 9. Cities across the north of the country, close to the border with Turkmenistan, have seen significant hail and rain in recent hours, with streets, homes and shops all under more than 60cm of water in some locations. At the same time, underground tunnels were turned into swimming pools in Khorasan and Golestan regions. In one incident below, a man was seen collecting golf b…