. "1352" . . . . "The Oaxaca Valley is a geographic region located within the modern-day State of Oaxaca in southern Mexico. The valley, which is located within the Sierra Madre Mountains, is shaped like a distorted and almost upside-down \u201CY,\u201D with each of its arms bearing specific names: the northwestern Etla arm, the central southern Valle Grande, and the Tlacolula arm to the east."@en .