You can see my pics taken on Lake Hurdal (3 hours drive north of Oslo) this week at http://www.pbase.com/scubamoo/norway_fe ... ice_diving
Here's one of the ice that was cut out of the lake's surface to gain access to the water below:

And one of 2 divers taking the plunge:

And one of a diver shaking hands through an air vent in the ice:

And one at the end of the day:

It was cold, but great fun!

Dave