Does anyone have recommendations for existing adventures that have a high potential for adaptation into a Dark Fantasy campaign? The ones that I have on my list so far are The Forgotten Temple of Tharizdun (a light and heat swallowing shrine under a strange black pyramid that the monsters don't go to), Against the Cult of the Reptile God (people going missing and occasionally returning strange, with a cult lair in a swamp cave), and Death Frost Doom (creepy tomb full of corpses and treasure with seemingly no guardians).