Not a hidden folder by any chance? Because default it is part of your projects root folder.
If you really want to go Inspector Gadget on this:
- create a small workflow test file.
- add 1 click action to it and set it to any element, just as long as a screencap is made to support it.
- save
- open your .xaml testfile in any text editor, such as notepad.
- find your element click code
- look for an ID similar to this one:
- This is the filename of the informative screenshot:
- Search your file system on this file and you have found your location.