To improve transparency in the European gas market, the IEA has been collecting monthly gas flow data on an entry and exit point basis (physical flows) and has made it available on an interactive map
Clicking on border points and countries will show additional gas information. You can also explore other options as provided by the software,
for example the full screen mode by clicking at the bottom of the map on  

The boundaries and names shown and the designations used on maps do not imply official endorsement or acceptance by the IEA.