When you navigate to the GAC folder (something like c:\Windows\Assembly) using the Windows Explorer, what you see is a special view showing assemblies' name, version, and culture (and some other info).
There are sometimes when you need to see the files hidden behind those assemblies.
You can still use the good old DOS prompt and navigate to that folder or better yet, you can add/modify a registry key that will force Windows Explorer to display that folder normally.
You need to create a new dword key under HKLM\Software\Microsoft\Fusion\ with the name DisableCacheViewer and set it’s [DWORD] value to 1.
You can also set the value of this key to 0 to display this folder using default assemblies' name, version ...