The cave depicted on the right has been described as also demonstrating and illustrating an alive entity, with the upper tunnels as "eyes" and the lower bigger tunnel entrance as "mouth". The two figures on the left seem to even be erotically intertwined or fighting for dominance to each other.
I was quite skeptical and tortured by certain things, when I drew this.
This painting has been incorporated in the series "the mote in mother's eye".