About this video
This video explores a special tunnel in Alaska built deep into the frozen ground. It was originally made by the army but now scientists use it to study permafrost, which is permanently frozen soil. Learn about what happens when permafrost melts and why it's important!
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What year was the tunnel in Alaska built?
Answer: 1963
Q2 What is permafrost?
Answer: Soil that stays frozen all year round.
Q3 Why did scientists start studying the tunnel?
Answer: Because it had untouched frozen ground from thousands of years ago.
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