The Oka River in the Irkutsk Region.
- Categories: Environmental Issues
- Location: Irkutsk region, Russia
- Event date: 26.09.2015
- Date published: 03.11.2015
- Author: Vladimir Smirnov
- Source: Sputnik
- Credit: Sputnik
- Original: Digital
- Media: JPEG, 5010x3336px, 14.7Mb