Mr. Dead's South Park Fanfic Haven was a South Park fansite managed by Mr. Dead at one location from an unknown date, which moved to a Tripod site in October 1999. It organized a wide variety of South Park fanfics by author. These were primarily early Genfic, much of which was later made available elsewhere at personal sites or Mr. Hat's Hellhole. Updates ceased in late 2000, but it remained online until 2013.
Unfortunately, it was never archived to current knowledge, and all that remains is a few newsgroup mentions.