Dora Hernandez Rubio, 44, was last seen on or around August 25, 2005, in the Arivaca area of Pima County, Arizona. She had been traveling on foot with family attempting to cross the border and began to suffer distress in the desert. A few days later, when she could go no further, her family left her near a place called La Sierrita, close to a highway signpost marked with the number 12.

When last seen she wore blue jeans, a black shirt, a black coat, gray tennis shoes and carried a black backpack. She is described as 5 feet 0 inches to 5 feet 4 inches tall, weighing 188 to 208 pounds, and having three Cesarean section scars on her abdomen. The Pima County Office of the Medical Examiner opened a case on September 13, 2005, and her information was entered into NamUs.

Many details about what happened after she was left in the desert remain unknown. If anyone knew Dora, was with her, or has information about that area near La Sierrita or the highway marker 12 in late August 2005, please come forward.