Reverse Trashed files in Backup Drive

I have inadvertently trashed a group of files that are located in a backup drive. This is how the files now look …
The original folder name was “2000” in the drive “BACK2”
The properties do not show any recovery option but as I drill down the individual files still look to be correctly in place…
Suggestions would be appreciated.

You should be able to open that folder as root and copy and paste the files to another location.

Usually go to your trash bin of thunar (in case of xfce) and restore the files there.

Or terminal:

gio trash --list
gio trash --restore trash:///somefilename