(Al-Ma’aarij) 70 : 9
وَتَكُونُ الْجِبَالُ كَالْعِهْنِ
And the mountains will become just like the tufts of wool.
As told in verse 35: 27, since there are mountains in many colours, it is told that on the Dooms Day the mountains will become just like tufts of wool. See explanation 9: 14; 78: 20; and 101: 5.