Limhi's group might have partly retraced the steps of the 43-man Limhi Expedition which had just returned to the land of Lehi-Nephi shortly before the arrival of Ammon. According to Joseph Allen, travel from Kaminaljuyu [his proposed land of Lehi-Nephi/Guatemala City] to the Guatemala-Mexico border must pass by Huehuetenango, Guatemala, which for centuries has been a military outpost because of its strategic location at this critical mountain pass at the headwaters of the Grijalva river [his proposed Sidon river]. At this place both the Grijalva River and the Usumacinta River have the same origin. In fact, had Limhi's 43 men started on the beginning tributary, at some point downriver they would have come to a fork in the river where they would have had to choose which way to go. Apparently, Limhi and his people now followed the tributaries which led them down the Grijalva (Sidon) river and on to Santa Rosa (Zarahemla). [Joseph L. Allen, Exploring the Lands of the Book of Mormon, p. 355]