QUIZ: Do You Know Where These National Monuments Are Located?

Jewel Cave National Monument is the third longest cave in the world.

Retry Correct Incorrect Spanning more than 195 miles long, the Jewel Cave located in South Dakota is the third longest cave in the world. The entrance was discovered by miners in 1900 where they found calcite crystals.

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Education Images/UIG via Getty Images

Education Images/UIG via Getty Images

Jewel Cave National Monument is the third longest cave in the world.

• South Dakota
• Alaska
• Connecticut
• Arkansas