Fold mountains.
Zagros Mountains.
Began forming roughly 25–20 million years ago, with major uplift continuing into the last 5 million years.
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A landscape with a history.
Formed by the ongoing collision between the Arabian Plate and the Eurasian Plate, running through modern-day Iran and Iraq. Part of the same broad Arabia–Eurasia collision zone as the Caucasus.
What makes it remarkable
Actively converging, with frequent regional seismic activity.
Another skyline. Another story.
Fold mountains
Himalayas
Began forming approximately 50 million years ago; still actively rising today.
Fold/volcanic, subduction-driven
Andes
Formation began roughly 200 million years ago, with the modern range's major uplift occurring within the last 25 million years.
Fold/uplift
Rocky Mountains
Primary formation (the Laramide orogeny) occurred roughly 80–55 million years ago.