The Traveling Frog - Rossitza and Stevan Olson: Ancient Roman Calendar & Sun Dial
The Traveling Frog - Rossitza and Stevan Olson: Prehistoric artifact in the Silistra Museum of Archaeology
The Traveling Frog - Rossitza and Stevan Olson: Prehistoric pottery in the Silistra Museum of archaeology
The Traveling Frog - Rossitza and Stevan Olson: Prehistoric pottery in the Silistra Museum of archaeology
The Traveling Frog - Rossitza and Stevan Olson: Prehistoric pottery in the Silistra Museum of archaeology
The Traveling Frog - Rossitza and Stevan Olson: Prehistoric squletton in the Silistra Museum of Archaeology
The Traveling Frog - Rossitza and Stevan Olson: Head reconstruction of prehistoric man
The Traveling Frog - Rossitza and Stevan Olson: Metal tools from the bronze age
The Traveling Frog - Rossitza and Stevan Olson: Metal tools from the bronze age
The Traveling Frog - Rossitza and Stevan Olson: Metal tools from the bronze age
The Traveling Frog - Rossitza and Stevan Olson: Roman stalae with inscription
The Traveling Frog - Rossitza and Stevan Olson: Map of the prehistoric settlements in Silistra and the Region
The Traveling Frog - Rossitza and Stevan Olson: Thracian ceramics from the region of Silistra
The Traveling Frog - Rossitza and Stevan Olson: Thracian ceramics from the region of Silistra
The Traveling Frog - Rossitza and Stevan Olson: Thracian chariot, reconstruction projects
The Traveling Frog - Rossitza and Stevan Olson: Roman bronze artifacts, Silistra Archaeology Museum
The Traveling Frog - Rossitza and Stevan Olson: Roman bronze artifacts, Silistra Archaeology Museum
The Traveling Frog - Rossitza and Stevan Olson: Roman bronze artifacts, Silistra Archaeology Museum
The Traveling Frog - Rossitza and Stevan Olson: Roman bronze artifacts, Silistra Archaeology Museum
The Traveling Frog - Rossitza and Stevan Olson: Roman bronze artifacts, Silistra Archaeology Museum