An enormous outdoor cave always on fire.
Thousands of fireflies cover a forest.
It's an island south of the Arabian Peninsula, part of the Yemeni Republic. Its plant life is unique to the island and it is commonly regarded as the most alien place on earth.
About 7,500 sq km spreading out in what is the world's largest salt desert.
The world's largest saltlakes. When there is a slight film of water on the surface, clouds seem to be up and down and everywhere.
There are three lakes on top, all three are different colors.
Discovered in 2000 while doing excavations on a mine. It contains some of the biggest crystals in the wrold. The selenite crystals can reach 1.2 meters of diameter and 15 meters long.
It's a 300 km2 desert next to the sea that gets flooded during rainy season.