35voutdoors.7z.001

This indicates the file is the first part of a multi-volume 7-Zip archive . To extract the contents, you must have all subsequent parts (e.g., .002, .003) in the same folder and use software like 7-Zip or WinRAR to open the first file.

Right-click the .001 file and select "Extract Here" using a compatible archive manager. 35VOutdoors.7z.001

Often, these large asset packs include a documentation file inside explaining the specific engine versions or license terms they support. This indicates the file is the first part

Place all numbered files in a single directory. 35VOutdoors.7z.001