Did You Know?

The Great Blue Hole of Belize contains stalactites formed during the last ice age.

This massive marine sinkhole formed during several episodes of quaternary glaciation. The perfectly preserved stalactites provide evidence of sea level changes over thousands of years. Scientists study these formations to understand historical climate patterns.

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The Door to Hell in Turkmenistan has burned continuously since 1971.

This 230-foot-wide crater was created when Soviet geologists accidentally drilled into a cavern filled with natural gas. They...

Read more: The Door to Hell in Turkmenistan has burned continuously since 1971.

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The Stone Forest of Madagascar features razor-sharp limestone needles.

The Tsingy de Bemaraha contains limestone formations so sharp they can cut through equipment and skin. The hostile...

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The Waitomo Glowworm Caves in New Zealand create natural light shows.

Thousands of bioluminescent larvae create stunning blue light displays on the cave ceilings. The glowworms use their light...

Read more: The Waitomo Glowworm Caves in New Zealand create natural light shows.