Four avenues opened out of the small cavern which the great rock stood in.

大岩石所在的岩洞里有四条岔路。

Without it, you might as well be some caveman, lost in time and pounding out text-messages on cavern walls in pig blood.

没有它，你也可能是一些野人，时间损失和冲击的文字，对洞穴的墙壁邮件猪血。

It goes on crumbling and falling away, and in time this Wash. out grows to be a spacious cavern.

它不断地崩落、流失，到了一定时候，这样蚀走的地方就成为一个宽敞的山洞。