Where are the nif files located at for Fallout 3?

In Fallout 3, NIF (NetImmerse Format) files are primarily located within the game's installation directory, specifically in the "Meshes" folder. This folder is typically found at "C:\Program Files (x86)\Bethesda Softworks\Fallout 3\Data\Meshes" on a Windows system. Users can also find NIF files in the "Fallout - Meshes.bsa" archive, which is packed within the game's data files. Modders often extract these files for customization or modification purposes.