Mountains as Pegs/Stabilizers

In the Quran, mountains are described as stabilizing structures for the Earth, peg-like in their function. This is often interpreted as a reference to the roots of mountains that stabilize the Earth’s crust, similar to the way pegs secure a tent.

وَأَلْقَىٰ فِى ٱلْأَرْضِ رَوَٰسِىَ أَن تَمِيدَ بِكُمْ وَأَنْهَٰرًۭا وَسُبُلًۭا لَّعَلَّكُمْ تَهْتَدُونَ

And he cast mountains on the earth, lest it shifts with you; and rivers, and roads, so that you may be guided.

The Holy Quran · An-Nahl (The Bee) · 16:15

وَجَعَلْنَا فِى ٱلْأَرْضِ رَوَٰسِىَ أَن تَمِيدَ بِهِمْ وَجَعَلْنَا فِيهَا فِجَاجًۭا سُبُلًۭا لَّعَلَّهُمْ يَهْتَدُونَ

And We placed on earth stabilizers, lest it sways with them, and We placed therein signposts and passages, that they may be guided.

The Holy Quran · Al-Anbiyaa (The Prophets) · 21:31

أَلَمْ نَجْعَلِ ٱلْأَرْضَ مِهَٰدًۭا

Did We not make the earth a cradle?

The Holy Quran · An-Naba (The Announcement) · 78:6

وَٱلْجِبَالَ أَوْتَادًۭا

And the mountains pegs?

The Holy Quran · An-Naba (The Announcement) · 78:7