The oldest mountains in the world

How are mountains formed? - Volcanic mountains are formed when tectonic shifts push molten magma to the surface, where it then cools and solidifies. Japan's Mount Fuji is an example of this.

Massif Central -
One of the oldest mountain and highland regions in Europe, the Massif Central of southeastern France is at least 60 million years old.

Aravalli Range -
The Aravallis are believed to date back to the Proterozoic era, making them around 350 million years old. 

Blue Ridge Mountains -
The Blue Ridge Mountains, arguably the most beautiful stretch of the North American East Coast's Appalachian Mountains.

Mount Pilanesberg -
Mount Pilanesberg has been inactive for quite some time, with its most recent eruption occurring around 1,200 million years ago. 

St. Francois Mountains -
While the St. Francois Mountains are quite modest in stature, with the highest peak resting only 1,772 feet (540 m)

Black Hills -
These fold mountains, with their characteristic abrupt and dramatic rock formations that seem to burst from the earth, are 1.8 billion years old.

Guiana Highlands -
At two billion years old, the Guiana Highlands range are not only the oldest mountains in South America, but in all of the Americas from Canada to Chile.

Magaliesberg -
The Magaliesberg are about 2.3 billion years old.

Karijini Range -
The Karijini Range is the second oldest range in the world, dating back 3.4 billion years ago.

Waterberg Mountains -
Scattered throughout the Waterberg Mountains are remnants of the very beginnings of human history, including cave art that dates back to the Stone Age.

Barberton Greenstone Belt -
The Barberton Greenstone Belt in South Africa, traditionally known as the Makhonjwa Mountains, take the cake as the oldest mountain range in the world. 

Himalayas -
The Himalayas were formed around 40 million years ago by the dramatic and catastrophic collision of the Indian and Eurasian landmasses.

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