I got inspired by some quest in a certain game I played last night and decided to make a roleplay about it, switching and changing things here and there to make it more exiting and better fit the whole setting.
Long story short, Charon is on his incredible and quite possibly deluded quest to hunt down his own moon again, but this time his adventure brought him to what could possibly be one of the most damned place on earth.
Lots of dangers ahead for anyone interested in some Indiana Jones-ish adventure... only deadlier and more creepy!
https://narutorp.niceboard.com/t3425-open-pitch-blackShit's open, yo.
Conditions: #1 Your character doesn't know JACK SHIT about this place either. Assumptions and wild guesses are perfectly fine, though.
#2 Charon just opened the entry for the first time after a few hundred years; the only way in is by the same way he just passed... which also means you couldn't possibly already being inside, waiting for someone to come.
Suggestion: Your character could've followed him there, silently and stealthily for whatever reasons you may seem fit.