27-year-old McLaughlin has been missing since June 8th, when he was seen in Wyoming’s Grand Teton National Park.
Despite a major search operation, the Dubliner remains missing.
McLaughlin's family have now issued a new flyer requesting anyone with information on his whereabouts to come forward.
The flyer describes McLaughlin as wearing wearing a red apple watch, a white short sleeve t-shirt, wire-rimmed sunglasses and a silver necklace at the time of his disappearance.
He is believed to have set off on a hike without any baggage but may have been wearing a hat, shorts and hiking boots.
The flyer also describes McLaughlin's distinctive tattoos. On the back of his right arm is a tattoo of a vase. A pair of dice is tattooed on his right forearm while his left forearm has a large coloured illustration.
McLaughlin is described on the flyer as "an incredibly friendly person" and it speculates that "it is likely that he would stop and chat with people or say hello in passing."
"We believe that he was alone," the McLaughlin family state on the flyer.
Due to the Wyoming weather "changing rapidly," the family believe they have "a small window to bring home this incredibly adored young man. We desperately need your help to find him and get closure for his loved ones who have been frantically searching over four long months to locate Cian."
The family requests anyone with relevant information to contact National Park Service Investigative Services Branch via call or text on 01-307-739-330, or to email [email protected].
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