Ta-Ha - 20:106 He will leave them flat and empty.
The state of mountains at the end of the world:
The Cave/18:47 On the Day when We sweep away the mountains and leave the earth bare, We will gather them without leaving a single one.


The Sure Truth/69:14 When the earth and the mountains are lifted up and crushed together and scattered,

The One Covering Himself/73:14 The day will come when the earth and the mountains will tremble and the mountains will be like scattered sand.


The Ways of Ascent/70:9 The mountains will be like discarded wool.

Ta-Ha/20:105 "They ask you about the mountains. Say, "My Lord will crumble them and scatter them."
Ta-Ha/20:107 You will not see therein the slightest curve or bump.

The Calamity/101:5 And the mountains will be like discarded wool.