Recent discoveries reveal the existence of massive mountain-like structures located deep beneath Earth's surface, a concept mentioned in the Quran 1400 years ago.

Key points: - The Arabic word “Fee” (فِي) means “inside,” indicating the mountains exist within Earth’s structure, not merely on its surface. - This contrasts with “Aala” (على), meaning “on-top,” which is not used here.

- What Are Internal Mountains? Seismic studies have identified a rugged mountain range deep within Earth's mantle, roughly 400 miles (640 km) below the surface. These structures have peaks towering 40 miles (64 km) high. - Scientific Evidence: Using seismic waves, researchers discovered a layered mantle with mountainous features at depths of 250 to 410 miles. These mountains slow the ductile layer's motion above them. These interior mountain ranges are taller than Everest and are key to Earth's structural stability, much like surface mountains.

Fourteen centuries ago, the understanding of mountains was limited to their surface appearance. The concept of internal mountains stabilizing Earth's layers was unknown.

The Quran’s description of mountains “inside the Earth” aligns remarkably with modern seismic findings of internal mountain ranges. This scientific correlation highlights the advanced nature of this Quranic reference in a time of limited knowledge.