อุโมงค์, หิน, แสงแดด, ทางผ่าน, ใต้ดิน, เบา, ขุด, ที่มนุษย์สร้างขึ้น, 倒影, เ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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