The earth shines in the Rostov pit

Residents of the city of Rostov-on-Don in Russia several days after sunset observe a strange picture that appears with the onset of twilight.
As reported by local residents, next to several five-story buildings located in the neighborhood Suvorovsky mud near buildings begins to illuminate in an extremely unnatural way. One of the women living in this place, recorded an incomprehensible phenomenon on the video and published it on the expanses of the international web.
According to the author of the clip, this place is enclosed by a fence, and recently there they began to dig a pit. She noted that there is no snow, so there is nothing to gleam there.