Open hgt SRTM files

I noticed that globalmapper can open .hgt SRTM files (from places such as here http://www.viewfinderpanoramas.org/dem3.html ) but only if they are zipped.
If you unzip the file then global mapper refuses to 'see' the .hgt
I find this very odd. If the file is zipped I can't really see what it is, but if I unzip it globalmapper won't open it. Why is it set up like this? Is it just to confuse us, or is there a deliberate train of thought behind it?
Many thanks for reading
If you unzip the file then global mapper refuses to 'see' the .hgt
I find this very odd. If the file is zipped I can't really see what it is, but if I unzip it globalmapper won't open it. Why is it set up like this? Is it just to confuse us, or is there a deliberate train of thought behind it?
Many thanks for reading
Comments
Let me know if I can be of further assistance.
Thanks,
Mike
Global Mapper Support
support@globalmapper.com