เขื่อน, น้ำ, ภูเขา, ธรรมชาติ, การท่องเที่ยว, การสำรวจ, ป่า, ฤดูร้อน, สีน้ำเงิน, ภูมิประเทศ, ต้นไม้
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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