This skip is used in every category that goes through the Archives. It allows the player to save a few seconds compared to using the ladder and provides a potentially easier RTSR setup for Seath.
External Resources
Glitchless ladder skip options : https://youtu.be/x_Ga7EAneOE by m3dic on YouTube.
Glitched ladder skip options : https://youtu.be/O0KVAclt9k8 by San on YouTube.