ต้นไม้, เส้นทาง, ถนนลูกรัง, ภูมิประเทศ, ธรรมชาติ, สิ่งแวดล้อม, ต้นสน, ท้องฟ้า, ป่า, บึง, ระบบนิเวศ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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