The formation of the ozone hole over Antarctica is primarily due to the presence of a prominent polar front and stratospheric clouds, which create an environment conducive to ozone depletion. The polar vortex, combined with stratospheric clouds, facilitates reactions involving chlorofluorocarbons (CFCs), which release chlorine when broken down by ultraviolet radiation. These chlorine atoms catalyze the destruction of ozone molecules, leading to significant thinning of the ozone layer during the austral spring, thus resulting in the pronounced ozone hole effect observed in this region.