anh 9 unit 8 skills 1 Luyện Bài Tập Trắc nghiệm Tiếng Anh 9 - Global Success - Xem ngay. bong đa ngoai hang anh Khi viết về một địa danh, bạn nên thêm lý do tại sao muốn quay lại, điều này khiến bài viết mang tính cá nhân hơn. soi keo ngoai hang anh Located in Quang Binh Province, Son Doong Cave was discovered by a local man named Ho Khanh in 1991, and became known internationally in 2009 thanks to British cavers, led by Howard Limbert. The cave was formed about 2 to 5 million years ago by river water eroding away the limestone underneath the mountain. It contains some of the tallest known stalagmites in the world - up to 70 metres tall.The cave is more than 200 metres wide, 150 metres high, and nearly 9 kilometres long, with caverns big enough to fit an entire street inside them. Son Doong Cave is recognised as the largest cave in the world by BCRA (British Cave Research Association) and selected as one of the most beautiful on earth by the BBC (British Broadcasting Corporation).
