In reply to Al Evans:
> (In reply to Simon_Sheff)
> [...]
>
> There was for many years a permanent icefield at the foot of Eldon Hole, we did a docu on it being the most southerly permanent snow south of Scotland. So British caves certainly can reach freezing point.
Your being pedantic, and your wrong.
Eldon hole is a large 'chasm' open to the elements including snow so is not a fair example of underground ice forming.
That is entirely different to water 'freezing' underground. So no they don't.
For the record I have been in many Dales and Peak caves in heinous outside temperatures, and have not run into ice.
The ambient winter temperature in British caves in Jan/Feb is about 8 or 9 degrees.