Enter the Undercroft is a quest objective/task in The Elder Scrolls Online
Background[edit]
Cadwell told you that you can locate the The Prophet by going through the Undercroft
Quest[edit]
Location[edit]
The Towers of Eyes (The Wailing Prison)
Walkthrough[edit]
Follow the river down from the Soul Shriven Camp and you will find the door that leads to the Undercroft