Dual Maps

Dual Maps (mashedworld.com/dualmaps) is a geospatial visualization tool that displays satellite imagery and Google Street View side by side for any location, allowing investigators to simultaneously examine aerial perspective and ground-level imagery of the same point. It synchronizes navigation between both views, making geographic analysis significantly more efficient than switching between separate tools.

For OSINT investigators conducting location verification, geospatial intelligence analysis, and target site assessment, Dual Maps eliminates the context-switching overhead of using Google Maps and Street View independently. When verifying whether a specific location matches both aerial and ground-level evidence from investigation materials, having both perspectives simultaneously is a significant operational advantage.

Common investigative applications include: cross-referencing claimed locations against satellite imagery to verify or disprove location claims, conducting site assessments of target addresses by examining both the aerial layout and ground-level appearance, analyzing the physical environment around a target address to identify escape routes, entry points, nearby landmarks, and access patterns.

For open-source geolocation investigations (GEOINT), Dual Maps supports the process of verifying whether imagery found in social media posts or open-source video matches a suspected location. The synchronized aerial and street-level view allows investigators to check multiple reference points simultaneously, accelerating confirmation or elimination of candidate locations.

The tool also supports temporal geospatial analysis — Street View captures have dates that may differ from current satellite imagery, allowing investigators to compare historical and current ground-level appearances at the same location. This is useful for tracking changes to physical infrastructure over time.

Limitations: Dual Maps inherits the coverage and recency limitations of the underlying Google imagery. Rural areas may have limited or no Street View coverage. Satellite imagery can be significantly outdated in some regions. For time-sensitive investigations, check the imagery dates in Google Maps directly to understand the currency of the data.

Record the coordinates or address analyzed, the imagery dates, and screenshot the relevant views with timestamps for geospatial evidence documentation.