Portomarin is built next to a Roman bridge over the Minho River and rebuilt in the Middle Ages, but I am thinking about the river of life the self finds ego after the third eye activation.
I AM celestial nervous system of my spiritual body, ego represents emotional domination giving birth to unconscious mother/child.
Ego is weakness of sensational-awareness to control my own power of life. Hence, to know who I REALLY AM must transmute emotional domination into sensational-awareness until two energies of the same essence harmonize at the chest and make connection with the third eye.
After the third eye activation I AM makes connection with my own unconscious-sensation finds ego, and begins the process of transmutation. Stronger sensational-awareness weaker ego until evolution of a celestial nervous system turns the river of unconscious manifestation into a clear mirror of self-identification.
Astral river symbolizes weakness of self-awareness manifesting physical reality. I AM being like a mirror for the self, but until strong to transmute desire into love must fall like a river and reflect.