Approaching drone shot of Eagle's Rock, more commonly known as Orlovi Skali, a religious sacrificial altar in the 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