Others claim that the builders simply ran out of materials and since they had scooped so much rock from the centre of the island, there was no land left to plough.
还有些人声称建造者只是用光了材料，因为他们从岛中心挖了这么多石头，没有可耕耘的土地了。
2
There was a ridge of ploughed land, with a plough upon it where it had been left last night when the horses were unyoked;