I am going to wing it.

After the tour, Scarlet finally got time away from the guests. She made it to the underworld for the first day of the duo leaderboard games. When she made it there, she found a change in the environment. One, it was brighter but colder than usual and two, not many reapers were around the soul delivery area and it was quiet. Even the soul registrars appeared to be bored. 

She delivered her souls and went off to find Severus who was waiting for her by the new, long wide wall whose depths could not be seen into. Frost had been right about the real being different from the one used for training because this one was rougher, reddish brown in color and covered in mist the higher one looked upwards. 

Below the wall were crowds of grim reapers, soul pets, hounds, gate keepers, and almost every creature in the underworld was watching and cheering. On the boundless wall, climbers had already starting progressing.