The north-central Vietnamese province of Quang Binh is home to famous cave systems including Son Doong, the world’s largest natural cave.

Recently, the British Caving Association has found 22 new caves in the province, with a total length of 11.7 kilometers.

Beside, the province is also home to beautiful rivers, including the Son River flowing out from Phong Nha Cave in Phong Nha Village, Bo Trach District.

It winds along the green mountains and villages, forming a soft yet majestic beauty. 

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