Amazing rock carving of Krepost Kalamita, Sewastopol, Crimea, Russia

Officially, Krepost Kalamita is a medieval Byzantium fortress that consisted of six towers connected by four curtains, of which three were not preserved. In this case much more interesting are pre-byzantine megalithic and rock carving sites of this place.

Finistras Rock Wall, Spain

Near Mountain Montsec at Aragón, Spain rises the mysterious stones known as the Finistres China Wall.  Side by side position pointing to a non-natural construction. Also because they separate the river from the lagoon like if they were constructed on purpose to protect the inner valley.

From the parallel rock wall stands a small fortress