https://www.makersmakings.org/aghora-and-ahumkara/

This can be a manifestation of Rudra and Rudra on the identical time, Rudra manifests from it

This face of Para Shiva which is dealing with southwards is called as Aghora. Aghora means that which is not terrible or wrathful and thus this denotes the peaceable face of

Sadashiva. This face is of a Neela Varanam or blue colour. Aghora face represents the macro-ingredient of Fire and it is the side of harmful regeneration i.e. the method of

rejuvenation. This face has the sound of Ahum or it holds the Ahum Naad within itself. Ahum denotes the I’ness of Maker’s Makings along with the I’ness which is held by every

animate and inanimate microcosm.