Kovachevsko kale

Kovachevsko kale (Ковачевско кале) is a late Roman fortress, whose ruins are located 6 km west of the Bulgarian town of Popovo, near the modern road Popovo - Byala. The ancient name of the settlement is unknown. The Czech archaeologist Karel Škorpil called it Kovachoveshko kale, after the name of the nearby village, Kovachevets (at that time Kovachovets).

The fortress is located on a flat terrain, naturally protected by low-water rivers. It has a roughly triangular form. The defensive stone walls are fortified with 17 U-shaped towers. There are two gates, one to the west, to other one to the north-east.