The Quran draws our attention to a very important characteristic of mountains:
“Did We not make the earth a resting place? And the mountains as stakes?” (Quran 78:6-7)
The Quran indicates that mountains have deep roots by using the word stakes to describe them. In fact mountains do have deep roots, and the word stakes is an accurate description for them. A book titled ‘Earth’ by Geophysicist Frank Press explains that mountains are like stakes, and are buried deep under the surface of the earth. Mount Everest (pictured below), the height of which is approximately 9 km above ground, has a root deeper than 125 km.
The fact that mountains have deep ‘stake’ like roots was not known, until after the development of the theory of plate tectonics in the beginning of the 20th century.