The walkers, a 54 year old woman and her 26 year old son, both from Kent, had set out earlier the previous day with the intention of traversing the mountain from Ty Nant via the summit and south ridge to Minffordd. At some point after the summit they lost the south ridge path. They continued descending until the terrain became too difficult to continue.
Speaking to a call-handler they described themselves as "unhurt, just lost," and were able to see what they believed to be the Tal y Llyn lake.
A team vehicle was deployed to Tal y Llyn to show blue lights and look for a response on the hillside. A light was spotted on the hill side in Cwm Amarch and an estimated location was calculated. With this information established, a party of Team volunteers was deployed up the steep slope to locate the casualties. The plan was to walk the pair back down the mountain, but on assessment, the mother was found to be unable to walk due to the aggravation of a pre-existing back problem. Given the steep nature of the terrain, assistance from the Coastguard helicopter, R936, was requested to help with casualty evacuation. The pair were winched aboard the aircraft and flown to Ysbyty Gwynedd for further assessment and treatment.
Everyone was safely off the hill by 6:30 a.m.