The writings and revelations of Edgar Cayce may be mute on the topic of black holes specifically, but he does refer to what he terms "the outer darkness," a region devoid of light, love and life that some may encounter at the time of death. Cayce's description of the outer darkness, denser in its center than at its outer edges, resemble some characteristics of the present-day understanding of black holes.
According to Cayce, the outer darkness is a region created by the collective self-interest and selfishness of human kind since the dawn of time. It does not affect everyone who enters it equally; some experience it as a place of satisfaction whereas others feel excruciating pain as a result of entering into it. Cayce also suggests that the amount of darkness one experiences may be closely equivalent to the lack of love one has experienced in life.
Cayce's so-called tunnel experiences, in which he was able to mentally travel through a tunnel of light surrounded by darkness to other dimensions in order to retrieve much of the information found in his writings and revelations, could also be closely related to black holes. According to analysts, Cayce was able to control his mind in order to reach a state of near death, triggering unique, subconscious experiences.