Sink again was not lucky with cine properties which forgot to clean?

Unusual Karina inhabitants and guests observe Saint Petersburg, walking on Moika River Embankment at Pevchesky Bridge near Pushkina Alexandra. The fencing and the granite embankment are covered with a white raid. In misunderstanding people scrape it. The correspondent of Moyki78 posherudil a finger also noted that it is the certain properties which is very similar to mix of cotton wool with napkins which as though wetted, and stuck then to cast iron. Feelings that is hydrochloric solution, it is not created. It seems as though to metal something pasted, and then forgot to clean. Looks strange and frighteningly. Let's remind, 4...