Photographers and writers have for the past 20 years journeyed to Northern New Mexico to chronicle the opioid epidemic. Images of strung-out tecatos, or heroin addicts, needles jammed in tattooed forearms, syringes piled in gutters, families weeping over gravestones: Long before the opioid abuse became a national scourge, these images and stories served to define Rio Arriba County as the heroin capital of the country — a place that is my querencia, my home of the heart.