Olympus Mons
- marcduret2000
- 2014年9月28日
- 読了時間: 1分
This is Mars. This mountain is called Olympus Mons. It is a volcano. It is almost the same size as Texas. At 22,000 mters high, it is the highest mountain in the solar system. 3 times higher than Mount Everest. Who will be the first man or woman to climb this huge mountain?
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