We finally know how a fault that gave rise to Denali, North America's highest mountain, first formed. According to new research, the Denali Fault is actually an ancient suture mark where two land ...

This is how the mountains of the Himalayas in Asia were formed. The Andes are the world's longest mountain range. This causes lava to erupt out of the gap that is left. As it cools down ...

The Black Cuillin on the Isle of Skye is a volcanic mountain range. It was formed around 60 million years ago but today it's popular with very adventurous mountain climbers looking for a challenge!