at Chicomoztoc they continued the occupation of boatmen, which they had followed while in Aztlan.[425] By way of summary, then, we may venture the following: 1. Viewed from the standpoint of Sr. Ramirez, Aztlan may be located somewhere not far distant from Chalco Lake. The islands which it encircles may correspond to the description of the ancient home of the Aztecs, given by Duran as quoted on page 257 and described as Culhuacan. Teo-Culhuacan, where the Aztecs sacrificed yearly, may be the city of Culhuacan situated in that neighborhood. As additional testimony we have the fact that most of the stations named in the migrations can be located in the Central Mexican region. The report that they came from the north may refer only to the scattering of the Nahua or Toltec people from Tollan, just north of the valley. 2. The statements of all the writers that the Aztecs came from the north, the fact that Duran and Sahagun assign the primitive Nahua home to the region of Florida, and the prevalence of mounds and shell-heaps in great numbers in the Gulf States, together with the extension of those mounds through Texas into Mexico, may warrant the opinion that Aztlan was in the Mississippi Valley, or, looking in another direction, the rock or cave dwellings recently discovered in Southern Utah and the Rocky Mountain region (of which we shall give a description in the next chapter) may indicate the locality of the ancient and much-sought-for land. The identity in meaning of Chicomoztoc (seven caves) and Tulan Zuiva (seven caves) together with the fact that both places in Quiché and Nahua history were the point of separation for many tribes, is a singular coincidence, if they are not one and the same. In the preceding chapter we have seen that Tulan Zuiva of the Quichés was in a northern or at least a colder climate, where they suffered greatly for want of fire, a fact of no little significance. On the other hand Teo-Culhuacan, the place of yearly sacrifice, may have been a city of the Chiapan region, since Sahagun located Tamoanchan the first city of the Nahuas (Olmec) after their arrival from Florida in Mexico, somewhere in the Usumacinta Valley. It is possible that a large number of the immigrants remained behind the company which migrated northward to Teotihuacan and thence to the seven caves, subsequently uniting with the Toltecs at Tollan. This view has had quite a number of advocates.[426] We will not undertake, in the present state of knowledge on the subject, to decide which of these three claims is the true one, if either one of them is correct. Our only wish is to furnish the reader a margin for his choice. It seems to us that it would be unscientific to attempt to decide a question based upon such slender and contradictory data.