While there isn't one specific "post" for this filename, it is most commonly associated with (specifically the "The Legend of Zelda: Great Master Hylian" or similar mod/repack distributions) found on community forums or archival sites. How to handle this file:
: Right-click TLWGMH.7z.001 and select "Extract Here" . If you get an error, you are likely missing a part of the sequence. TLWGMH.7z.001
: Ensure you have the full set of files (TLWGMH.7z.001 through however many parts exist). While there isn't one specific "post" for this