Citlaltepec.

Headword: 
Citlaltepec.
Principal English Translation: 

a place name, mentioned in the Codex Mendoza (c. 1541) on folio 17 verso; referenced in a Relación Geográfico in 1557 (Berdan, Aztec Imperial Strategies, 1996, 237); also, a mountain (see attestations)

Orthographic Variants: 
Citlaltepetl, Citlaltepeque, Zitlaltepeque
Attestations from sources in English: 

Citlaltepec = "at Star Mountain," a stratodormant volcano, that highest peak in Mexico, the Pico de Orizaba, between Puebla and Veracruz
Wikipedia.