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Why is a small rural community in the Tohono O'Odham Indian Reservation in Southern Arizona.
The unusual name of the town comes from the fact the two major highways, Arizona 85 and Arizona 86, originally intersected in a Y-intersection. Arizona Department of Transporation (ADOT) later removed the old Y-intersection and built the two highways in a conventional T-intersection for traffic safety reasons to the south of the original intersection.