OSM maps of the United Arab Emirates focusing on Error detection
Cloudmade's OSM Error Edition maps of Oman
Rodrigo Moya's basic OSM map of Poland
Cloudmade's OSM Error Edition maps of Mongolia
Mountain bike and hiking map of Lesotho by openMTBmap
Basic map of the mediterranean sea which includes the coastlines as well as submarine contours. It can be downloaded as .exe file, which integrates itself directly into Mapsource from where it can be sent comfortably to your Garmin device.
