Into the Whirlpool

Dark Tower Continued
I'm with a group of people I don't recognize, walking through an arid, sandy area that's not quite a desert but pretty close. Somehow I understand that we are acting out the Dark Tower series, namely the events of the last two books that I haven't read. There is a small green plastic disc on the ground (embedded in the ground) that is significant but I don't know why. I look into the distance and on the horizon I can see a blur of neon light. As I continue to stare, the blur resolves itself into a steadily flashing sign that says "SEPPIPPI". Each letter is individually lit and in its own color. I know that Seppippi is the name of a town or city; however, I'm slightly concerned about what I'll find when I go there. The sign itself looks normal enough, but I know the world has moved on and I remember what happened when the characters in the Dark Tower visited the city of Lud. I can't see anything of the city itself, just the sign, so I have no clue about what awaits.