Almost One Island and The Narrowest Strait

Novaya Zemlya is "almost" a single island. Its separated into two islands Severny Island and Yuzhny Island by Matochkin Strait, which at its narrowest point is just 600 metres wide




https://en.wikipedia.org/wiki/Matochkin_Strait
https://en.wikipedia.org/wiki/Novaya_Zemlya
https://en.wikipedia.org/wiki/Severny_Island
https://en.wikipedia.org/wiki/Yuzhny_Island