Multiple choice general knowledge science & technology

How many miles long is the Valles Marineris?

  1. 1,200 miles

  2. 2,400 miles

  3. 4,000 miles

  4. 3,500 miles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Valles Marineris is a massive canyon system on Mars that spans approximately 2,400 miles (4,000 km) long - about 4-5 times the length of the Grand Canyon. It reaches depths of up to 7 miles and was likely formed by tectonic activity rather than water erosion.

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