Fatal step into mountain lake while descending from summit in Wales
A twenty-year-old London student Mahammed Naim Islam and a friend climbed the highest point Wales — Mount Yr Wyddfa in the Eryri massif. While descending the Miner's Path trail, the friends decided to enter the water of the glacial lake Llyn Glaslyn.
Eyewitnesses noticed two young men jumping into the water, when one of them soon began to drown. A witness rushed to help and entered the water, but came across an underwater ledge: a shallow area at knee level abruptly dropped to a considerable depth. Due to the danger and cold water, no one was able to reach the drowning man, and the boy disappeared beneath the surface.
A large-scale search involved mountain rescuers and the search and rescue helicopter Coastguard, but the operation had to be suspended in the evening. The next day, diving team specialists used sonar to locate the body approximately 12 meters from the shore at a depth of about five meters, after which a police diver lifted it to the surface.
During the inquest at Caernarfon, the assistant coroner north west Wales Sarah Riley ruled the death to be accidental drowning. The investigation found that the deceased was not a swimmer at all and had inadvertently fallen into the dangerous depth.
Source: Student, 20, drowned after entering Eryri lake - North Wales Live
Context
Glacial Lake Llyn Glaslyn is located directly below the slopes of the peak Yr Wyddfa. The reservoir has a characteristic dangerous relief: it remains shallow only directly near the rocky shore, after which the bottom sharply goes to considerable depth, and the water temperature usually does not rise above 10 °C.