How to Find Windows Spotlight Lock Screen Images

First of open windows explorer click the View tab click the Options tab in the Advanced Settings list,  click the button labeled Show hidden files, folders, and drives 

click Apply to save the change click Ok to close it now open run by pressing Windows Key + R type in %userprofile%

from %userprofile% navigate to AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets 

copy all the files by Pressing CTRL + A and CTRL + C now make a folder where you want the images paste the files you copied by Pressing CTRL + V now navigate to the folder in the command prompt 

and type in ren *.* *.jpg

if you open the folder in explorer now you are going to see alot of jpg images there you can find what image you want.

if you have any questions or if there is something you don't understand leave a comment and ill reply as fast as possible.