Two locals from the northern highlands' Ha Giang Province take tour guide Giap Van Hai down a sheer and rugged cliff to the bottom of a 80-meter-deep sinkhole.
Source: VnExpress
Two locals from the northern highlands' Ha Giang Province take tour guide Giap Van Hai down a sheer and rugged cliff to the bottom of a 80-meter-deep sinkhole.
Source: VnExpress
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