I preserve records of the past, my surface holds ancient secrets, explorers seek my hidden depths. What am I?

Category: Geography · Difficulty: hard

Hint: Consider environments cold and remote.

Answer

A deep polar ice cap

Explanation

A deep polar ice cap contains layers of historical data and climate records, prompting exploration to understand Earth's past.

This is a hard geography riddle — a tricky one that takes a little thought. The answer is A deep polar ice cap.

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