Photo from Ambassador Pham Sanh Chau's facebook.
All participants told reporters that the tour was a "unique" one in their lives, a special experience in a place with an unreal beauty.

They said they will promote the image of Son Doong cave to their friends, families and the world.

Walking out from Son Doong cave, where his cell phone could work again, Ambassador Pham Sanh Chau, who launched the idea of organizing this exploration tour for foreign ambassadors in Vietnam, wrote on his personal Facebook page that this was "an emotional journey".

“We wore traditional costumes, saluted the flags and sang the National Anthems at the deepest place under the ground ...,” he wrote.

Ambassador Pham Sanh Chau, Director of the Department of Cultural Relations and UNESCO of the Ministry of Foreign Affairs, hoped that, after this trip, Son Doong cave, Quang Binh tourism in particular and Vietnam in general will be promoted strongly worldwide. (Photo from Ambassador Pham Sanh Chau’s Facebook)

US Assistant Secretary of State Tom Malinowski said that this was an amazing trip and thanked Quang Binh people and government for conserving Son Doong for future generations. He said tourists around the world will come to admire the beauty and popularity of Son Doong.

Here are exclusive photos of Oxalis Adventures of the journey to explore the world's largest cave made by Ambassador Pham Sanh Chau of Vietnam, six foreign ambassadors to Vietnam, the US Assistant Secretary of State, the runner-up of Miss Universe Vietnam Duong Truong Thien, provided by Nguyen Chau A, General Director of Oxalis, the only provider of Son Doong tours, to Dan Tri online newspaper:

Ambassador Pham Sanh Chau, Head of the Vietnamese Ministry of Foreign Affairs' Culture and UNESCO Department (photo by Oxalis Adventures)

The US Assistant Secretary of State Tom Malinowski (photo by Oxalis Adventures)

The journey begins

Crossing mountains and streams to go into the cave (photo by Oxalis Adventures)

The gate of the cave (photo by Oxalis Adventures)

The majestic beauty at the cave

A spectacular beauty (photo by Oxalis Adventures)

The ambassadors carrying out their national flags (photo by Oxalis Adventures)

Inside the world's largest cave

The incomparable beauty of Son Doong Cave

Take a rest inside the cave

Taking a rest (photo by Oxalis Adventures)

They are singing songs composed by themselves during the exploration (photo by Oxalis Adventures)

The whole group (copyright belongs to Oxalis Adventures)

The group sang together the song that they wrote during the trip

The ambassadors said they will introduce, promote the image of Son Doong cave to the world

After the journey, on May 16, the Quang Binh People's Committee awarded Son Doong cave conquering badges to the Ambassadors.(photo by Oxalis Adventures)

Source Vietnamnet /Dan Tri/ Oxalis Adventures