Top panel: spectrum of the region characterised by log([N II]/Hα) <  − 0.2 and log([S II]/Hα) <  − 0.4 in Circinus, corresponding to the innermost regions of the outflowing cone. Bottom panel: spectrum of the region characterised by log([N II]/Hα) > 0.1 and log([S II]/Hα) > 0 in Circinus, mainly tracing the edges of the north-western outflowing cone. High-ionisation coronal lines (in green) are observed almost exclusively in the low LILr region, supporting a scenario where the inner parts of the outflowing gas in this galaxy are in optically thin highly ionised regions.