The article has a beautiful photo taken by the Mars Express if you follow the link. The water ice is a miles sized chunk and that is quite a lot of water for any future explorers. Yeah right.
----------------------------------
Water Ice In Crater At Martian North Pole
European Space Agency ^ | July 28, 2005 | ESA
[
link to www.esa.int]
The HRSC on ESAīs Mars Express obtained this perspective view on 2 February 2005 during orbit 1343 with a ground resolution of approximately 15 metres per pixel. It shows an unnamed impact crater located on Vastitas Borealis, a broad plain that covers much of Marsīs far northern latitudes, at approximately 70.5° North and 103° East.
The crater is 35 kilometres wide and has a maximum depth of approximately 2 kilometres beneath the crater rim. The circular patch of bright material located at the centre of the crater is residual water ice.
The colours are very close to natural, but the vertical relief is exaggerated three times. The view is looking east.
Credits: ESA/DLR/FU Berlin (G. Neukum)