Onto-phenomenology of Spatial Memory in Adumbrations

As we turn to the lived experience of memory, we are confronted with an eerie and enigmatic possibility: the possibility to remember what we ourselves never lived. How to explain phenomenologically this enigmatic but fundamental level of spatialized memory? I would like to come back to these issues in order to face yet another fundamental question: Does a phenomenology of spatialized memory require any onto-phenomenological concretizations?