ธรรมชาติ, การท่องเที่ยว, การสำรวจ, กลางแจ้ง, อัลไต, ภูเขา, ป่า, ท้องฟ้า, เมฆ, ฤดูร้อน, สีน้ำเงิน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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