Sestroretsk swamp: between the Primorsky Highway near Sestroretsk, Beloostrov village, ZSD and the road to Glukhoe Lake, includes the valley of the Chernaya River, the lower course of the Sestroretsk River and the northern part of the Sestroretsky Razliv reservoir, Kurortny District, Saint Petersburg
<a href="//commons.wikimedia.org/wiki/User:%D0%90%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80_%D0%91%D0%B0%D0%B9%D0%B4%D1%83%D0%BA%D0%BE%D0%B2" title="User:Александр Байдуков">Александр Байдуков</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>