  Using high-resolution data of the $^{12}$CO and $^{13}$CO ($J$=1-0}) line
emission from The Mopra Southern Galactic Plane CO Survey in conjunction with
neutral hydrogen observations from the Southern Galactic Plane Survey (SGPS)
and mid-infrared Spitzer data, we have explored the large-scale environment of
the supernova remnant Kes 41. On the basis of these data, we identified for the
first time the parent cloud of Kes 41 in its whole extension and surveyed the
HII regions, masers, and the population of massive young stellar objects in the
cloud. The whole unveiled giant cloud, located at the kinematic distance of
12.0 $\pm$ 3.6 kpc, whose average total mass and size are $\sim$10-30
$\times10^5$ M$_\odot$ and $\sim$$26^{\prime}$, also shines in $\gamma$-rays,
as revealed by the Large Area Telescope on board the Fermi satellite. We
determined a high average proton density $\sim$500-1000~cm$^{-3}$ in the large
molecular complex, of which protons from the neutral atomic and ionised gases
comprise only $\sim$15%.
