Oxalis has been allowed to take tourists through Son Doong from entrance to exit from 2018
 |
| The ladder at the ‘Vietnamese Wall’ inside Son Doong. Photo: Oxalis |
The Quang Binh administration has green-lighted the ‘ladder solution’ despite widely objections that it may destroy the stalactites that are millions of years old inside Son Doong. Tiếp tục đọc “Vietnam to launch tours through Son Doong Cave as controversial ladder installation backed”
CVD 