Use the following procedure to set the .zfs/snapshot directory, which is hidden by default, to appear like any other directory in a filesystem.
The .zfs/snapshot directory contains a list of all snapshots on the filesystem. The snapshots can be accessed just like normal filesystem data, but are read-only. By default, the .zfs directory is not visible when listing directory contents. This setting prevents backup software from inadvertently backing up snapshots in addition to new data.
To make the directory hidden again, return to this page and select "Hidden from the drop-down menu, then click APPLY.