In winter during the dark nights the ground is covered with snow. This is the time you can experience the Northern Lights, Aurora Borealis. Keeping silent, watching and even hearing the lights dancing through the sky, it´s a magnificent experience. During the day time you can go cross country skiing, snowmobiling or hiking through steaming grounds. You can also visit the Icelandic Yule Lads in Dimmuborgir before Christmas. These are the 13 "Santa clauses" of Iceland, funny and interesting fellows.
What a great way to spend the day!