SRTM05 Files for Italy
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V1  (09/2024)
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These HGT files cover the complete territory of Italy and have a resolution of approximately 10-15 meters per sample.
Which means they each provide 7200 elevation samples per latitude/longitude degree.
This is no regular specified format and an extension to SRTM3 and SRTM1 - let's call it SRTM05.
The goal was to enhance the elevation profile for GPX tracks you get e.g. from navigation apps. An application that now supports this "SRTM05" format is RouteConverter (https://www.routeconverter.com).

The source for the tiles comes from the italian national institute for geophysics and vulcanology:
https://tinitaly.pi.ingv.it/Download_Area1_1.html#
The DEM model they provide is derived from several sources that were combined with SRTM1 data and finally interpolated into 10m resolution GeoTIFFs.
Keep in mind: This DEM model is NOT LIDAR derived! So the quality is less than LIDAR - but better than SRTM1.
Some tiles at the borders of italy cover other countries (France, Switzerland, Austria, Slovenia). The data for these tiles comes from SRTM1 for the foreign part and from Tinitaly for the italian part - they were merged together.
(So the real resolution for the borders is not as accurate. If you need better quality for the alps use Sonnys 0.5" DEMs at https://sonny.4lima.de )

Most of the conversion has been accomplished using Bluemarble Global Mapper (thanks to Sonny for several hints!) and its scripting capabilities along with a tool I programmed myself for correcting some errorness tiles and for merging the SRTM1 tiles.

Berlin, Germany
Sascha Trowitzsch