Remote areas by their geographical inaccessibility or location in hostile/foreign territory present numerous challenges in their mapping despite advances in the field of remote sensing. The primary challenge still remains in achieving reasonable accuracy standards in locational and feature extraction domains. The plethora of open domain RS and GIS resources present us with a credible feasibility of obtaining information to generate mapping products. This research is an attempt to identify, utilize and assess quantitatively and qualitatively the open domain resources in mapping of remote inaccessible areas. The research identifies various open domain resources for obtaining Ground Control Points (GCPs), images and GIS data both physical and cultural for mapping requirements. On the quantitative assessment aspect, the location intelligence obtained in the form of GCPs has been verified using field verification. The research has been instrumental in arriving at robust methodology of online DGPS processing without uploading own sensitive raw GNSS observation data in the open domain.