He vanished later that day, prompting a large‑scale search that has now entered its fifth day.

His sister, Ola Volo, told authorities that a very short 911 call was received on Tuesday at around 6:30 p.m.; during the call he said he was stuck on the mountain, and the family confirmed the voice and phone number were his.

The Mount Habrich Loop is known for limited cell service, which the family believes is why the emergency call was cut off so quickly.

Dozens of volunteers, drones, helicopters, ground crews and police dogs have been deployed, and Tyler Duncan, a search manager with Squamish Search and Rescue, explained that the area is riddled with gullies, little canyons and extensive boulder fields, creating an almost infinite number of possible locations.

Unfavourable weather on Wednesday further complicated the effort, but rescuers resumed operations on Thursday despite the conditions.

Because the terrain is technical and cell coverage sparse, a brief 911 call may be the only concrete indication of a missing hiker’s whereabouts; when that call is truncated, rescuers must contend with vague information while searching a complex, hard‑to‑navigate landscape.