For those unfamiliar: Alton Bay, New Hampshire is a seaplane base on Lake Winnipesaukee. In the winter the bay apparently freezes pretty solid and for the last 30 years some residents have maintained a runway on the ice. I guess it's a certified runway for a period of time during the winter, measuring out at around 3,000 x 100'. Looks like it is pretty well known around the Northeast. Anyone been in there? Seems like it would be fun on packed snow, maybe not so much on the glare ice.
I realize this is old hat for Alaskans and Minnesotans, but cool nonetheless for an official airport in the lower 48.

Here's a great video of a landing:
http://www.youtube.com/watch?v=b1LWE4-CDXk
Here's a great video of a not-great landing:
http://www.youtube.com/watch?v=TjlJ2GB4RMU












