I used to make hillshade and contours for several scales from Aster 30m GDEM with ErMapper. My data is not covering everything I need, so I am looking for a recent one.
I saw there was a Aster GDEM v3 available for download on Reverb Echo Nasa website: https://reverb.echo.nasa.gov/reverb/
but I can't download the extent I need in one time (max 2000 tiles by download and I need more than 32000).
So before starting the downloads, I was wondering if Aster was the best data nowadays. Does anyone know other DEM data? Maybe more precise than 30m, and available for free. The extent I need contains Spain, France, Belgium and Switzerland.