Spanish authorities have ramped up efforts to locate a missing American hiker in the scenic Pyrenees mountains. Cole Henderson, a 27-year-old from the United States, went silent on July 9 after texting friends he was hiking near Mount Perdido, a popular trail within Ordesa y Monte Perdido National Park.

Friends reported Henderson’s disappearance after he did not board his flight back to the Netherlands. He last communicated around 2 p.m. from the vicinity of Mount Perdido, mentioning he would be putting his phone in airplane mode. According to his friend, Max Senoff, Henderson had parked his car in the village of Torla, the usual starting point for many hikers venturing into the park.

Search and rescue teams from the Guardia Civil initiated a search on July 14 following reports of his absence. They have since deployed helicopters and specialized rescue units to comb the mountainous terrain and rugged canyons synonymous with the region. A camping stove receipt was found in Henderson's vehicle, sparking hope he may have planned an extended hike.

Henderson, recognized for his passion for adventure and group travel, was concluding a vacation in Spain after attending the Running of the Bulls festival in Pamplona. Friends describe him as organized and sociable, known for fostering camaraderie among his peers.

The challenging hike to Mount Perdido is renowned for its steep ascents, though it is usually not considered technical and can be completed within a day. The ongoing search reflects both the urgency of the situation and the risks associated with outdoor activities in remote areas.

Ali Watkins, an international news correspondent for The Times, is based in Belfast and tracking this developing story.