The sixth aliyah then describes more journeys of the Jews in the desert. Also in this aliyah, another great miracle is performed, comparable to the splitting of the Yam Suf. The Jews approach the valley of Arnon. This valley is very deep and narrow. Rashi says that the mountains are so close that a man on each of the two facing mountains could speak to one another. The Emorim realize that this is an excellent place to ambush the Jews because the Jews have to pass in a narrow space far below them. So the Emorites take ammunition and station themselves in crevices and caves on each mountain ready to hurl rocks on the Jews below. As the Jews pass, the mountain on the Emorite side (which later was to become part of Israel) trembles with awe at the approach of the Aron Hakodesh and leans toward the other mountain. The mountains come together and the peaks of one mountain precisely enter the caves of the other, crushing the Emorite army hiding there.