Fortunately, no one was hurt. Although pit formed very impressive size: length of 10 meters and a depth of at least 8. In place promptly left emergency crews. As it turned out, the thing worn gas manifold.
"The collector is quite old, built long ago. Approximate cause of the destruction set collector, you can now supposedly say — a gas corrosion", — the press-secretary of the Rostov Vodokanal Andrey Kryukov.
The scale works great, plan to finish their evening. This will have to dig up halfway.