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The Pipeline - Oahu, Hawaii

Oahu is famous for its impressive waves, and it's no wonder that so many keen surfers travel to this Hawaiian island to stretch their surfing legs. But if you're a novice to this sport, you probably want to avoid the Pipeline. Considered to be the world's highest and most dangerous wave, it averages around nine feet tall. However, the highest wave ever recorded here came in at a whopping 20 feet.

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Around five people have died while riding this giant wave, but many more have been injured - especially as the beach itself is full of jagged rocks and sharp edges.