To successfully extract the data, follow these steps using 7-Zip :

The file is the second part of a multi-volume 7-Zip compressed archive. Because it is a split file, it cannot be opened on its own; you must have all related volumes (e.g., .001 , .002 , .003 ) in the same folder to extract the contents.

Right-click only the file ending in .001 .

While "BWHG" does not have a single universal meaning, it is often associated with specific niche content in online communities: