A farmer noticed a hole in a rock what he discovered on the other side has amazed the whole world.
Behind the rock hide an undiscovered cave. The massive cave turned out to be the largest in the world!
It contains a whole world, including a rainforest breathtaking rock walls and even a beach!
It is around 5 km long and it takes a week to explore it completely.
And it’s so tall it could fit a 40-storey skyscraper inside!
The cave, Han Son Goong, is located in Vietnam.
And it was created between 2 and 5 million years ago. But the massive cave was a hidden treasure until recently.
In 2013, the first visitors toured the cave. And it’s now taking the world by storm.
Now, wouldn’t you just want to take a step inside?