Jaskinia Son Doong w Wietnamie [10]

A visitor takes part in a tour in Son Doong cave, one of the world's largest natural caves, in central Vietnam's Quang Binh province on January 19, 20...

Visitors take part in a tour in Son Doong cave, one of the world's largest natural caves, in central Vietnam's Quang Binh province on January 19, 2021...

This photograph taken on January 18, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...

This photograph taken on January 18, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...

This photograph taken on January 18, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...

This photograph taken on January 18, 2021 shows a visitor in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietna...

This photograph taken on January 17, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...

This photograph taken on January 17, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...

This photograph taken on January 16, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...

This photograph taken on January 16, 2021 shows visitors in Son Doong cave, one of the world's largest natural caves, during a tour in central Vietnam...