How Do Compasses Tell Which Way Is North at the South Pole?

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As compasses draw closer to the magnetic North and South Poles, they become less reliable.

Penguins don't need a compass to find their way. But even if they had a compass, it wouldn't do them much good close to the South Pole.(Image: © Shutterstock)
▼ Imagine you're packing for the trip of a lifetime: Antarctica! You're going to see the South Pole and maybe hang out with some penguins. But how are you going to find the actual South Pole?
You might think that you would reach for a compass first. Compasses — navigation instruments that contain magnetized pointers— have helped people find their way around Earth for thousands of years. The planet's magnetic field attracts one end of the compass's magnetic pointer toward the North Pole, so compass users always know which way magnetic north lies.
However, you may be surprised to learn that compasses behave strangely when they are close to the South Pole. Why is that? (▪ ▪ ▪)

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Nice to know. grateful for sharing.