I’ve been sitting on this information for well over a year, waiting to announce it with a bit more pizazz, but I guess I’ll just say it now.

-1784338777788894343 was an incredibly famous seed in the old days of Beta Minecraft that, like every famous seed in the old days of Beta Minecraft (Glacier, anyone?) was presumed ruined when beta 1.8 came out and changed the way the map generated. But, if you load up the seed in modern Minecraft (or really any version after the 1.7.2 “update that changed the world”) you will find that the hollowed out mountain that made the seed famous back in the day is back (or at least roughly two thirds of it is)! You’ll spawn a short walk west of the hill, but just navigate towards 0,0 coordinates and it’ll be there.