Boredpanda – the leading art, design and photography community website has cited Vietnam’s Son Doong Cave among top 15 unbelievable places that look like they are from another planet.

In the article’s introduction, the website wondered why people spend years training to be astronauts while they can explore strange new worlds right here on earth?

Boredpanda also stressed that the following destinations span practically every continent on Earth, so viewers can experience fantastic sites no matter where they live.

Son Doong Cave is located in the UNESCO-recognized Phong Nha-Ke Bang National Park in Quang Binh Province, Vietnam.

The mouth of Son Doong was first discovered by Ho Khanh, a resident of Son Trach Commune, Bo Trach District, in 1991. In 2009 he acted as a guide for an expedition by the British Cave Research Association led by Howard Limbert and his wife Deb.

That year the cave became known worldwide after being identified as the world's largest.

The five-kilometre-long cave, which is 150 meters high and 200 meters wide, has at least 150 individual caves, a dense subterranean jungle and several underground rivers.

Rounding on the list of top 15 are Fly Geyser of the US, Tianzi Moutains of China, Glowworm Cave of New Zealand, Pamukkale of Turkey, Zhangye Danxia Landforms of China, Baikal Lake of Russia, Dragonblood Trees of Yemen, Monte Roraima of Venezuela, Giants Causeway of Northern Ireland, Grand Prismatic Spring of the US, Naica Mine of Mexico, Red Beach of China, Glowing Beach of Maldives, and Antelope Canyon of the US.

VOV