To the eye, a mountain is simply a great mass of rock rising from the land. But the Qur'an describes mountains in a more surprising way — assigning them a function. Again and again, it speaks of mountains as having been "set firm" in the earth, and, most strikingly, likens them to pegs.
Mountains as Pegs
In a short, vivid passage, the Qur'an asks the reader to consider the design of the world around them, and describes the mountains with a single evocative word:
"Have We not made the earth a resting place, and the mountains as pegs?"
(Surah An-Naba, 78:6–7)
A peg — like a tent-peg — is mostly hidden beneath the surface, anchoring what stands above it. The image suggests that a mountain is not merely what rises into view, but something rooted deep below, holding things in place. Muslims have long reflected on the aptness of this description of a mountain as an anchor rather than a mere pile of stone.
Set Firm So the Earth Does Not Shake
The Qur'an goes further, repeatedly linking the mountains to the stability of the earth — describing them as having been set firmly so that the land does not sway or shake with its inhabitants:
"And He has cast into the earth firmly set mountains, lest it shift with you…"
(Surah An-Nahl, 16:15)
"And We placed within the earth firmly set mountains, lest it should shift with them…"
(Surah Al-Anbiya, 21:31)
This recurring theme — mountains as stabilisers of the ground beneath our feet — is presented by the Qur'an as one of God's mercies upon humankind: a world made firm and habitable, rather than restless and shifting.
Raised High and Made Firm
The Qur'an also invites reflection on the sheer scale and craftsmanship of the mountains, listing them among the signs of a deliberate Creator:
"And the mountains — how they are set up?"
(Surah Al-Ghashiyah, 88:19)
"And We placed therein lofty, firmly set mountains and gave you to drink sweet water."
(Surah Al-Mursalat, 77:27)
Here the mountains are tied to another mercy: fresh water. Mountains gather snow and rain and release it as rivers and springs — a life-giving role the Qur'an quietly acknowledges alongside their stabilising one.
A Sign of Power and Mercy
For the Qur'an, the mountains are not lifeless scenery. They are a demonstration — of a Creator who anchored the land, raised the peaks, stored the water, and made the earth a stable home. And they are a reminder of humility: for all their immensity, the Qur'an says even the mountains will one day be moved by the command of the One who set them.
"And you see the mountains, thinking them rigid, while they will pass as the passing of clouds. It is the work of Allah, who perfected all things."
(Surah An-Naml, 27:88)
In Summary
The Qur'an describes mountains not just as high rock but as pegs — anchored deep, set firm to steady the earth, raised high, and gathering the water that sustains life. Muslims read in these verses a portrait of a world carefully engineered by a merciful Creator, and an invitation to see purpose in the landscape itself.