บึงไฟ, ทะเลสาป, ภูเขา, ปล่องภูเขาไฟ, โดยธรรมชาติ, ทะเลสาบ, น้ำ, ภูเขาไฟ, ความหลากหลายทางชีวภาพ, พืชพันธุ์, ระบบนิเวศ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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