ตะไคร่น้ำ, พืช, น้ำ, สิ่งแวดล้อม, สะอาด, ภูมิประเทศ, ทัศนียภาพ, ลำห้วย, หุบเขา, ต้นไม้, น้ำตก
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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