Another option: Climb high and look for signs of human habitation.
还有个选择：攀登到高处并寻找人类居住的迹象。
In this place ten miles around there is no signs of human habitation.
在这一地方的十英里的周围内杳无人烟。
The find was believed to be over 600,000 years old - making the oldest signs of human habitation in the world.
该发现被认为具有60万年的历史，是全世界人类居住的最古老标志。
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