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We report the most detailed $1-3$ GHz radio continuum emission map of thenearest region of massive star formation, the Carina Nebula. As part of a largeprogram with the Australia Telescope Compact Array, we have covered $\sim$ 12deg$^2$, achieving an angular resolution of $\sim$ 16 arcsec, representing thelargest and most complete map of the radio continuum to date. Our continuum mapshows a spectacular and complex distribution of emission across the nebula,with multiple structures such as filaments, shells, and fronts across a widerange of size scales. The ionization fronts have advanced far into the southernand northern region of the Galactic Plane, as fronts are clearly detected atdistances $\sim$ 80 pc from the stellar clusters in the center. We estimated anionization photon luminosity $Q_\mathrm{H}=(7.8 \pm 0.8) \times 10^{50}$s$^{-1}$ which corresponds to $\sim 85\%$ of the total value obtained fromstellar population studies. Thus, approximately $15\%$ of the ionizing flux hasescaped from the nebula into the diffuse Galactic Interstellar Medium.Comparison between radio continuum and the hydrogen atomic and molecular gasmaps offers a clear view of the bipolar outflow driven by the energy releasedby the massive stellar clusters that also affects the fraction of molecular gasacross the nebula. Comparison between 8$\mu$m and 70$\mu$m emission maps andthe radio continuum reveals how the hot gas permeates through the molecularcloud, shapes the material into features such as pillars, small shells andarc-like structures, and ultimately, escapes.

The Carina Nebula and Gum 31 molecular complex III: The distribution of the 1-3 GHz radio continuum across the whole nebula