> 
> Hi you all.
> 
> I downloaded one so-called DEM files but did not manage to get anything

> understand my nervousness. All the DEM utilities fail to read it ( and
> the file is not corrupted as it is in a normal .tgz format and I can see
> its content).
> 
On second thought, are you using DEM files? What do you mean by "normal
.tgz" format? Have you uncompressed and untar-ed it? When I worked with
DEM files, then height information file was 80 MB + there was number of
auxilary files. Seems like you haven't unpacked them...

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