The Andes is the longest land-based mountain range in the world, stretching the entire length of South America for more than 7,000km across seven countries.
The Aravalli Mountains make up one of the oldest ranges in the world, formed between one and two billion years ago.
The Sierra Nevada in California is predominantly made of a huge slab of mixed granite which formed deep below the Earth’s surface.
The Rockies have some of the highest peaks in Canada and would once have been higher than Mount Kilimanjaro, reaching up to 6,000m.
The Bernese Alps are one of the largest ranges in the Alps chain, which run 800km through Europe.
At 8,848m above sea level, Everest is the highest mountain in the world; in fact, the Himalayas are home to nine of the 10 highest mountains on Earth.