  We present the analysis of Very Large Telescope (VLT) Multi Unit
Spectroscopic Explorer (MUSE) observations of the planetary nebula (PN) IC
4406. MUSE images in key emission lines are used to unveil the presence of at
least 5 ring-like structures North and South of the main nebula of IC 4406.
MUSE spectra are extracted from the rings to unambiguously assess for the first
time in a PN their physical conditions, electron density (ne) and temperature
(Te). The rings are found to have similar Te than the rim of the main nebula,
but smaller ne. Ratios between different ionic species suggest that the rings
of IC 4406 have a lower ionization state than the main cavity, in contrast to
what was suggested for the rings in NGC6543, the Cat's Eye Nebula.
