  We report the discovery of a rich population of low mass stars in the young,
massive star forming region N66/NGC346 in the Small Magellanic Cloud, from deep
V, I and H alpha images taken with the HST/ACS. These stars have likely formed
together with the NGC346 cluster, ~3-5 Myr ago. Their magnitude and colors are
those of pre-main sequence stars in the mass range 0.6-3 Mo, mostly
concentrated in the main cluster, but with secondary subclusters spread over a
region across ~45 pc. These subclusters appear to be spatially coincident with
previously known knots of molecular gas identified in ground based and ISO
observations. We show that N66/NGC346 is a complex region, being shaped by its
massive stars, and the observations presented here represent a key step towards
the understanding of how star formation occurred and has progressed in this low
metallicity environment.
