Mountain walkers are being urged to take more precautions after pictures emerged of people climbing up through the snow on Snowdon wearing shorts, and leading a dog.
The Snowdonia National Park says wardens have spoken to "significant numbers" of walkers in recent days who were simply ill prepared.
Each year dozens of people are injured and even die making the climb, as Emily Gadd reports.
Footage courtesy of www.mountainsafety.co.uk
How to avoid needing to be rescued - advice from the Llanberis Mountain Rescue Team
- Plan your route
- Plan your day properly
- Check the weather forecast, and change your plans if the weather is bad
- Carry the right gear
- Allow plenty of time
- Take adequate food and drink
- Don't be afraid to turn back if conditions are poor