Firefighters have warned people to stay away from icy water after a teenage boy fell through ice into a freezing pond.
The 13-year-old boy was trying to walk across the frozen water in Hillsborough Park, Sheffield, to an island in the middle when he fell in on Monday.
He was rescued by fire crews who said he had an "extremely narrow escape".
The boy was taken to Sheffield Children's Hospital. Yorkshire Ambulance Service said his condition had not been life-threatening.
South Yorkshire Fire and Rescue Service said it had issued several warnings to people to stay away from frozen lakes and ponds ever since the recent cold snap started a fortnight ago.
A spokesman said: "This boy has failed to heed our warnings and had an extremely narrow escape.
"Every year, people in the UK die when entering frozen water. Hypothermia can set in very quickly, and this affects people's ability to escape.
"It seems that a further cold spell is on its way and we would urge people to stay away from frozen water to ensure they their family does not have to endure a tragedy this Christmas."