  The shell-type supernova remnant RX J0852.0-4622 was observed with the High
Energy Stereoscopic System (H.E.S.S.) of Atmospheric Cherenkov Telescopes
between December 2004 and May 2005 for a total observation time of 33 hours,
above an average gamma-ray energy threshold of 250 GeV. The angular resolution
of ~0.06 degree (for events triggering 3 or 4 telescopes) and the large field
of view of H.E.S.S. ($5^{\circ}$ diameter) are well adapted to studying the
morphology of the object in very high energy gamma-rays, which exhibits a
remarkably thin shell very similar to the features observed in the radio range
and in X-rays. The spectral analysis of the source from 300 GeV to 20 TeV is
also presented. Finally, the possible origins of the very high energy gamma-ray
emission (Inverse Compton scattering by electrons or the decay of neutral pions
produced by proton interactions) are discussed, on the basis of morphological
and spectral features obtained at different wavelengths.
