The Traveling Frog - Rossitza and Stevan Olson: Thracian Burrial Mound, Sveshtari
The Traveling Frog - Rossitza and Stevan Olson: Entrance to the Thracian mound
The Traveling Frog - Rossitza and Stevan Olson: Sveshtari, Thracian Tomb - UNESCO World Cultural Heritage Site
The Traveling Frog - Rossitza and Stevan Olson: Some of the 110 Thracian tombs
The Traveling Frog - Rossitza and Stevan Olson: Another Thracian Mound and Tomb