Several times, in different groups, as soon as we zoned in someone would say something like, "Let me look at the map... Okay, the progenitor crystal is by the bowling alley." And it would be by the bowling alley.
I thought the map was the same layout all the time, though the number of crystals varied. Were they just joking with the group and making a lucky guess? Or is there a way to tell upon zone-in where the progenitor crystal is?