did you see this file (e.g., a forum, a specific website, a torrent site)?
If you can provide the source website or the general topic (e.g., GIS data, simulation tools), I can help you find the specific blog post detailing how to use this file.
This is the 12th part of a larger file. You will need all other parts ( .part01.rar through .part13 or similar) to extract the contents.