Drone orbiting around the natural rock formation of a sacrificial altar of Eagle's Rock, or locally known as the Orlovi Skali, located in Rhodope Mountains in Bulgaria

eagles rock orlovi skali ardino kardzhali natural rock formation trapezoid niches rhodope mountain scenery steep slope thracian shrine archaeological site bulgaria deaf stones sanctuary gorges rockhewn tomb chamber religious significance panoramic view sacred rockbeehive religious complex volcanic mysterious cliff jagged tooth fir forest cultural practices burial site ritual objects prehistoric sacrificial altar astronomical observatory holy site relics nature landscape trees skies rocks tourist tourism forest mountains