这条铁路与自然垄断有关︰其他到达马丘比丘遗址的唯一方式，就是沿着印加小径徒步旅行四天。

The railway involves a natural monopoly: the only other way of getting to the ruins is a four-day hike along the Inca Trail.

youdao

征溪口贝丘遗址位于辰溪县东部，遗址总面积近万平方米，实际发掘面积88平方米。遗物以陶器为主，石器次之。

Located in the east of Chenxi, the site occupies a total area of nearly 10,000 sq. m, of which only 88 sq. m underwent excavation.

youdao

征溪口贝丘遗址位于辰溪县东部，遗址总面积近万平方米，实际发掘面积88平方米。遗物以陶器为主，石器次之。

Located in the east of Chenxi, the site occupies a total area of nearly 10,000 sq. m, of which only 88 sq. m underwent excavation.

youdao