Ximénez describe "tulan zu" (tulan zuiva in the K'ich'e) como el "monte" (huyub), el cual término quizá está relacionado a una prática k'iche'. Historicamente los k'iche' construyen sus fortalezas, las así llamadas tinamit, en las cimas de las montañas. Por su parte el notable académico Sam Colop (página 141, nota 223) identifica Tulan con Tula de Guerrero, hoy día un pequeño pueblo en el noreste del estado Mexicano de Guerrero.
As these examples suggest, there are various possibilities for the identity of Tulan. Christenson (2007: 197fn547) explains its etymology as "Nahua Tullan or Tollan: 'Place of Cattail Reeds'. In the Quiché language, tulan is a 'palace, or manor-house' (Basseta), while tolan is a city or house that has been abandoned, perhaps referring to the ruins of once great cities that dot the region and that belong to the legendary ancestors of the Maya people. In Aztec theology, Tollan was a mythic place located near Coatepec (Snake Mountain) where the ancestors of the Mexica received their patron god Huitzilopochtli. In this myth, Tollan was inhabited by the Toltecs, great sages who invented the sciences of astronomy, calendrics, agriculture, and medcine, as well as the arts of writing, painting, sculpture, metalwork, jade carving, and weaving. Throughout Mesoamerica in the late Postclassic era (ca. 1200–1524), the legendary Toltecs where the bearers of political legitimacy. The Aztecs used the name Tollan to refer to thier own legendary palce of origin, as well as a general term for 'city.'…The Tulan mentioned here [in the Popol Vuh] was likely either Chichen Itza, a major center of power during the Terminal Classic (800–900) and early Postclassic (900–1200) periods, or its successor Mayapan. Both would have been "across the sea" (the Gulf of Mexico) with respect to the Guatemalan highlands as described in the Popol Vuh."
Tedlock (page 359) identifies Tulan as "a town in the east that was like the Classic Maya site of Copán in having a bat as its insignia. The lords of the Quiché, Cakchiquel, and other 'mountain people' gathered there, paying tribute and acquiring their respective patron deities. by the time they found their own places to rule, Tulan had been abandoned. The site was probably not called Tulan until after its demise."
Tedlock also lists Suywa and "Seven Caves, Seven Canyons" as other names of Tulan.