The MUSE view of the host galaxy of GRB 100316D
  The low distance, $z=0.0591$, of GRB 100316D and its association with SN
2010bh represent two important motivations for studying this host galaxy and
the GRB's immediate environment with the Integral-Field Spectrographs like
VLT/MUSE. Its large field-of-view allows us to create 2D maps of gas
metallicity, ionization level, and the star-formation rate distribution maps,
as well as to investigate the presence of possible host companions. The host is
a late-type dwarf irregular galaxy with multiple star-forming regions and an
extended central region with signatures of on-going shock interactions. The GRB
site is characterized by the lowest metallicity, the highest star-formation
rate and the youngest ($\sim$ 20-30 Myr) stellar population in the galaxy,
which suggest a GRB progenitor stellar population with masses up to 20 -- 40
$M_{\odot}$. We note that the GRB site has an offset of $\sim$660pc from the
most luminous SF region in the host. The observed SF activity in this galaxy
may have been triggered by a relatively recent gravitational encounter between
the host and a small undetected ($L_{H\alpha} \leq 10^{36}$ erg/s) companion.
