Here is some information I get from Kim Komando, my favorite tech adviser on line. I just received it in my inbox yesterday. :)
"There are numerous map sites on the Internet. Five big ones are Google Maps, Yahoo! Local Maps, Mapquest, Microsoft's Live Search and Ask City. That sounds like a bunch of mapping. But they all use mapping data from NavTeq.
This company says it spends a lot of time driving the roads. Maybe its explorers haven't spent much time on your street. I suggest you notify them.
On its site, click the Map Reporter button. That will bring up a form to report mapping problems. Enter your address at the top. Under Road and Road Feature, select "road is in the wrong place or has the wrong shape."
The form also includes a box to add your comments. Be nice. Nobody's perfect. You can also include your e-mail address. The company says it uses that to update you on corrections"
I'm quite sure, it covers Wieliczka as well. It would be a pity, if tourists trying to get there - couldn't - because of a bad map. Wieliczka should be interested in corrections to be made as well.