I once marked fierce rivalry, now silent and overgrown, a line lost to time but etched forever beneath the earth. What am I?

Category: Geography · Difficulty: hard

Hint: Think about old conflict markers no longer visible on the surface.

Answer

An abandoned ancient fortification trench

Explanation

Ancient trenches mark old conflicts buried and forgotten, unlike current infrastructure or simple landmarks.

This is a hard geography riddle — a tricky one that takes a little thought. The answer is An abandoned ancient fortification trench.

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