Ted Weeden just posted a draft of a paper on this as I mentioned. He argues for Caesarea Philippi.
(1)The rural ambience of the Markan narrative suggests that the Markan community is located in a rural village (so Howard Kee, Community of the New Age, 103; Richard Rohrbaugh, “The Social
Location of Mark's Audience,” INT, 1993, 380-384); and Gerd Theissen (The Gospels in Context,
(2) Mark’s identification of Lake Gennesaret as a “sea” (the “Sea of Galilee”), rather than a “lake,”suggests that he is so far removed from a real sea that he does not know the difference between a body of water legitimately identified as a “sea” and a body of water that can only legitimately be identified as a “lake” (so Theissen, 105-108).
(3) With all his infamous geographical errors, Mark appears to know well the “lay of the land” in two longitudinally opposite geographical areas of Palestine, as Dean Chapman has pointed out.1 Those two areas are: (2) places on the upper rim of the Sea of Galilee, which include Capernaum, Gennersaret, Bethsaida and Dalmanutha, and the route northward from Bethsaida to Caesarea-Philippi.2 It stands to reason that if Mark writes from somewhere in the Palestinian region, then his provenance is most likely to be in or nearby one of the two areas which narratively Mark appears to be most familiar with and demonstrates accurate mapping of its geography. Of the two geographical areas which Mark seems to know best, the northern rim of the Sea of Galilee and northward, and Jerusalem and its surrounds, Chapman (34) opts for Jerusalem as the location of the Markan community. He explains Mark’s knowledge of the area on the northern rim of the Sea of Galilee and northward toward Caesarea Philippi as the result of information Mark has derived “through repeated contact with Galilean natives” (35). I opt for just the opposite explanation. Íamely, Mark’s home community is in the area north of the Sea of Galilee, the village region of Caesarea Philippi. Mark likely knows the accurate geographical lay of the land in the Jerusalem area from either having visited the area himself or from former Judeans who settled in the Jewish section of Caesarea Philippi. I can hardly imagine Mark being a product of the Christian community in Jerusalem given the fact that Mark’s theology and christology so radically differ from the Jerusalem Church.
Weeden lists 14 such arguments in total. I reprint no more for copyright issues and sinsce this is only a first draft of sorts. I've also omitted the footnotes.
http://groups.yahoo.com/group/crosstalk2/
I think you have to be a member to view the file though and its a highly moderated list which requires knowledge of critical scholarship
But I didn't intend to fully support this. Its one possibility. Mack has suggested Tyre-Sidon, others Rome, some Jerusalem-Area.
My point is that the geography errors appealed to by triadboy show 1) he has not studied the geography errors in Mark enough or the map of the land to see where good and bad geography actually occurs and 2) fails to note that even natives can make geography mistakes. There were no cars, maps or globes. Coming up with acccurate geography was much more difficult at that time than it is today.
Vinnie