这些痕迹是游牧人留下的，他们生活在从公元前约35，000年到公元前10，000年的冰川期的末期，以狩猎、捕鱼为生。

The nomads who made these markings lived by hunting and fishing during the last Ice Age which began about 35,000 B. C. and ended about 10,000 B.

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对狩猎场建设的可行性、猎期和猎取量、狩猎场的管理、狩猎场的经济效益进行了探讨。

This article has also made an exploration on the construction feasibility of hunting park, hunting period and hunting quota, hunting park management, economic benefits of hunting park.

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