Researchers have discovered the world’s longest salt cave called Malham in Mount Sedom, Israel. It is 10-km long and surpasses previous record holder Three Nudes (Namakdan) Salt Cave in Qeshm Island, Iran which is almost 6.5 km in length.
- It was first discovered in the 1980s and was believed to be just under 5.7 km long. In 2018 using sophisticated laser technology its length was confiremed 10km.
- It is made entirely of salt beneath a layer of cap rock. It was formed by water that dissolved salt and other minerals deposited beneath Earth’s surface and created channels.
- Part of it runs through Mount Sodom, Israel's biggest mountain located on the southwestern tip of the Dead Sea.
- It is living river cave and still growing as rainwater from surface stream flows down cracks in the surface, dissolving salt and creating semi-horizontal channels along the way that flow down towards the Dead Sea. Over time, its length is expected to further increase due to rains.