Mishkova niva
              
              
The 
              most famous monument of the ancient Thracian culture in the region 
              is the sanctuary in the Mishkova niva territory.
              
The sanctuary Mishkova niva is part of a big complex located 
                around 3 – 3.5 km southwest from Malko Tarnovo, on the left shore 
                of the Deli river, in immediate proximity to the state border 
                of the Republic of Turkey. The complex consists of a fortress 
                on the mountain top called Golyamo Gradishte (Big Ruins), mines 
                at the foot of the mountain, a mound necropolis, a fortified suburban 
                villa from the Roman era, as well as the so-called Golyma Mogila 
                (Big Mound). The complex is known from the beginning of the 20th 
                century and was initially reported as an Apollo sanctuary due 
                to the inscriptions brought from the site to the city.
              Golyamo Gradishte is the highest mountain top in Bulgarian Strandzha 
                – 710 meters above sea level. Its name comes from the fortress 
                on the top, which served as a shelter, observatory and protection 
                of the region until and after the Roman era. It was, however, 
                broken into by treasure-hunters during the last quarter of the 
                20th c. The wall of the fortress is built from crudity stones 
                of different sizes, very solidly, without any soldering. The thickness 
                of the wall is between 1.20 and 1.30 m. One can occasionally observe 
                parts of bricks and metallurgical slag. The space surrounded by 
                the fortress' wall has a diameter of around 100 m. One can discover 
                faint remains of chambers inside.
              Around 30 m. southwest from the highest point of the top, there 
                are rocky incisions preserved in the living rock. The traces from 
                rocky incisions on the top are in the form of pits. They suggest 
                that during a very early period – probably the 2nd – beginning 
                of 1st mil. BC – there was an operating rock sanctuary. It probably 
                began functioning as a fortress in later areas. Survived for millennia, 
                the site has never been archaeologically researched.