IcelandOnTheWeb.com 
Iceland on the web is the largest web directory on Iceland in English. It´s easily found on major search engines, such as Google and Yahoo and is a great source of information on Iceland. Over 3500 sites on Iceland categorized by subjects where you can find almost every tour operator, travel agent, hotel or car rental. You can also find websites of government agencies, universities, businesses and Icelandic personal homepages in English. The URL is http.//iceland.vefur.is and www.IcelandOnTheWeb.Com.

Nature Explorer Iceland
Local Icelandic travel agent specializing in super jeep tours in Iceland
http://www.NatureExplorer.is

Weather - The Icelandic Meteorological Office
Weatherforecasts, meteograms, satellite pictures and more.
http://en.vedur.is

Roads - The Public Roads Administration
Here´s a brilliant map that show which roads are open and what the conditions are. http://www.vegagerdin.is/english/road-conditions-and-weather/the-entire-country/island1e.html 

Snowmobiling on Mýrdalsjökull glacier
On our Spectacular South day tour you have the option of renting a snowmobile. Information on snowmobiling and photos are found on: http://snow.is/snow-Eng/

Northern Lights seen from space
Great pictures from space of the poles and the auroras around them.
http://www.gsfc.nasa.gov/topstory/20011025aurora.html 

Some Icelandic photographers who have taken great photos of the Northern Lights 
http://www.photography.is/What_is_he_to_now/North-light/Chasing_the_aurora.html 
http://www.iww.is/art/shs/pages/page1.html
http://www.arctic-images.com/Northern_Lights/Northern_Lights.html

Other interesting Northern Lights links:
http://eiger.physics.uiowa.edu/%7Evis/conjugate_aurora/
http://sec.noaa.gov/pmap/

Iceland Private Tours exchanges links with Icelandic sites which we list here and here.