2 verses have
mountains
in Edition Clear Qur'an by Talal Itani / An-Naml (The Ant)

27:61Or, who made the earth habitable, and made rivers flow through it, and set mountains on it, and placed a partition between the two seas? Is there another god with God? But most of them do not know.

27:88And you see the mountains, and imagine them fixed, yet they pass, as the passing of the clouds—the making of God, who has perfected everything. He is fully Informed of what you do.