Drone retreating from Beglik Tash and revealing the coastline of Black Sea, situated a few kilometers north of the city of Primorsko in Bulgaria

beglik tash black sea bulgaria prehistoric rock sanctuary sea coast primorsko thracian tribes iron age megaliths place of worship wombcave openair museum burgas province cape marriage bed rituals sacrificial stones sharapana menhiris divine step holy cave sun god archaeological site water estuary saline trading route bay horizon skies blue green clouds boulders body of water coastline shoreline drone shots aerial anoxic salt wedge fluvial trees ecosystem environment nature reserve