I cannot delete a folder located on my hard disk by any means.

I don't quite know how it was created, all I know is, that it is a pretty deep structure of folders (too deep to delete it at once, since Windows restriction path name too long), but the problem in the end is, that I can't "pull out" the inner folders, because they don't seem to be folders anymore (Context menu lacks things like "Properties", "Cut", "Copy", "Delete" etc.)

Here a picture of how a right click looks like on one of these "folders":

As you can see, the current folder is in very deep, but that is not the problem, rather the one I left-clicked on.

Has anyone any advice on how to get rid of these?

I tried a chkdsk, said no errors. I also tried deleting those folder via a VMWare Ubuntu, to no success. I also tried a batch file from a volunteer at MS boards, that should automatically de-nest such folders, but I guess mine is a special case, since the tool only created more such folders.