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That Which Lurks Beneath

Author: DMDave

Addon: Content which can be added into any game - new or existing!

Price: $6.99

That Which Lurks Beneath

By: Adventures Await

That Which Lurks Beneath is a Fifth Edition adventure for three to six characters of 7th- or 8th-level and is optimized for four characters with an average party level (APL) of 7. Characters who complete this adventure should earn enough experience to reach approximately halfway to 8th level.

An item of immense power has been located and the adventurers must journey underwater to claim it. This campaign takes place in Arden, although it can be set in your own world. Any party composition should be able to finish the adventure with intelligent play.


Long ago, before the oceans receded, a great temple was built to worship a creature of immense power, an aboleth. When the oceans receded, the creature and many of its servants were trapped in the depths of the temple, unable to escape back into the open water. In the centuries since, a group of explorers located the top of the temple. Appearing to be nothing more than a ruin on a small island, it is in fact the entry point to a vast underground and underwater complex. As they explored further, many fell under the sway of the aboleth. Others were warped by the alien energies that filled the place.

Now, the top of the temple is dominated by sahuagin and their chuul who worship the strange alien obelisk that can be found there. Beneath this, the explorers, driven mad and warped beyond recognition, worship at the water's edge, seeking ways to get closer to their aberrant master. Deeper still beneath the water lies the long-forgotten temple itself, and inside, the aboleth and the treasure it guards, the Crown of the Deep.


As a DMDave adventure, you can expect the following features and benefits:

Quick Guide

System: D&D 5E
Starting Level: 7
Length: 6-8 hours
Installation: Add-On
Sheet: D&D 5e by Roll20


Install this Add-On via the dropdown menu in the Game Addons section of the Game Details Page. Select That Which Lurks Beneath and click on the blue Add to Game button beside the drop down menu.

Bug and Technical Issue Reporting

If you encounter any bugs or technical issues with this adventure or any of DMDave's adventures on Roll20, visit our Bug Report Page and let us know!

i Can only be used with Roll20; cannot be downloaded.

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License: Roll20 End User License Agreement
(Personal Use Only, Do Not Distribute)