I am truly afraid of dark places. I am not afraid of the 'dark' in a sense; I am terrified of what is just beyond sight - like under decks, inside holes, things like that. When I swim at the river, the river bank terrifies me because of what can be living between the muck and tree roots that crawl up vertical embankments -_-
If we are to get metaphysical, I fear dying and God not being too happy about my philosophical stances.
I also fear wrecking on my motorcycle and being physically disfigured, which is why I've toned down on both my stupidity and frequency on that machine.