The Symbolism of the Cave and the Nameless Saint (SPOILER)
Just curious what people's interpretations were of the "vampiric gift" process that happens when someone enters the cave. Darvell mentions in a conversation Ruthven that, "forgiveness is a Christian value. My gods are older...more ruthless." Seeing how they use the term from Caribbean folklore "soucriant" analogous to "vampire" in this film, I wonder if the "Old Gods" Darvell mentions are literally meant to be from that culture.
Symbolically though, in a story with themes of institutionalized misogyny, the oppression of woman, and then female liberation/empowerment, I wonder if the cave is meant to symbolize the female? The way the water ran red with blood upon someone's "vampiric turning" reminded me both of a womb and child birth or a woman's menstrual blood (sorry for the imagery, I played the game Bloodborne recently.)
Another mystery is the nature of the transformation itself since all we witness as the audience is Darvell encountering a "doppelganger". Seeing as how the director plays with time period cuts, not everything we see on screen seems to me to be taken literally. Like Clara viewing her orphanage as a memory but on-screen seemed to be looking literally at herself.
Anyhow I'm curious on discussion regarding potential implied lore/backstory within the film as well as the symbolism gathered.
TL/DR: What the hell happened in the cave literally/symbolically?