Dzhebel
![Крепост Устра](https://welcome.bg/wp-content/uploads/2020/01/185_002_Krepost_Ustra_Djebel-150x150.jpg)
Ustra Fortress
The Ustra fortress, situated near the village of Ustra, is one of the highest strongholds in the Rhodope mountain.
The Ustra fortress, situated near the village of Ustra, is one of the highest strongholds in the Rhodope mountain.