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The Horror Under the Mountain

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The Horror Under the Mountain.  

Volume 1 of the Great White North Trilogy.  

  On a nameless, featureless demi-plane the Tarrasque rages across an all-encompassing nothingness.  Last seen on Faerun a century ago during the cataclysm of Odobaz, the battle mage order of the Eldritch Storm sacrificed itself to banish the mighty titan to its demi-plane prison.  Now a foul power emerges in the High Ice and nightmare visions of the Tarrasque trampling cities wrack the minds of the living—can your adventurers defeat the Horror Under the Mountain?

This is a 46 page adventure for characters level 14 to 16.  You can preview the entire adventure by clicking "Full-size Preview."  Please  preview the adventure before you purchase it to make sure you are happy with the maps which I made in GIMP to resemble 1st edition blue/white maps.

Note: following the release of Volo's Guide to Monsters I have included an addendum (as a seperate file) which updates the module with the relevant information regarding Mind Flayers.

If you like this adventure check out the other stand-alone adventures in the series: The Dead Wedding and Moloch's Revenge.

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Reviews (5)
Discussions (7)
Customer avatar
Christopher K March 12, 2020 2:40 pm UTC
PURCHASER
You say that Onas has the ability to "telepathically shield" the party, but there is no mechanism in the adventure, ToF, nor Unearthed Arcana: Psionics & the Mystic v2. What is the mechanism/source used?
 
Once the qualith portal is opened, Onas takes off to gather a githzerai army. How, then, is he able to telepathically shield the party, so they may explore the city? This is an important point as you say, "the best result in terms of player satisfaction was achieved when the adventurers had time to explore the city for two to
three numbered encounters while shielded from the elder brain's telepathy."
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Customer avatar
Brian M March 18, 2020 12:40 pm UTC
CREATOR
Hi Christopher K, thanks for the comment. I wrote this before Mordenkainen's Tome of Foes was released, but in truth Onas can be more powerful than a Zerth. Unfortunately the Githzerai stat blocks are rather limited. Nondetection is a 3rd level spell that nullifies the Elder Brian's Creature Sense ability. I'd recommend calling him a Githzerai Enlightened and swapping out one of his 3/day spells for Nondetection. If the players cannot be shielded then treat B'al Crek as the active city it is--there is closely monitored commerce and visitors. The party could certainly bluff there was a group of Zhentarim emissaries or powerful merchants. I hope these ideas are helpful.
Customer avatar
Perroloco M July 30, 2019 10:54 pm UTC
PURCHASER
Hey, is there any chance of you offering proper maps ready for VTT software/printing for those of us who buy pre-made adventures with the express intent of avoiding having to make maps from scratch and so on?
Customer avatar
Michael B July 21, 2017 3:41 pm UTC
Any idea when the next two installments of the trilogy will be available? My group really liked the concept of this, and I want to make sure the trilogy is still in process before we get rolling on it. Thanks!
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Customer avatar
Brian M July 22, 2017 8:20 am UTC
CREATOR
Hi Michael,
I've actually just finished running the playtests of the second installment. I've decided to treat the three as a stand-alone series. They'll take place in the same general area, but the villains and plots will change. The third installment will, however, bring back Beotan and the High Ice. I'm in the process of formatting the new adventure, "The Dead Wedding," on the homebrewery and I hope to have it up in a couple of weeks.
best,
Brian
p.s. if you play through Horror please leave a review (good, bad, or ugly) and I'll take on the feedback for any future revision.
Customer avatar
Brian M November 16, 2016 7:45 am UTC
CREATOR
November 15, 2016, added short addendum that incorporates Volo's Guides to Monsters.
Customer avatar
David E May 02, 2016 12:40 am UTC
PURCHASER
What do the brown and gray lines represent on the Illithid city map? I'm thinking gray are cavern walls and brown are roads or paths, but there's all this wide open space. is that wide open space just filled with generic shops and dwellings, so the only path through is the road?
Reply
Customer avatar
Brian M May 02, 2016 9:58 am UTC
CREATOR
First, thank you for your purchase, comments, and your review!
When I play tested the adventure the gray lines were main roads and the brown lines were small paths within the city. The grey lines exit the cavern (either into the underdark [ecnouncter 8] or into the grimlock caverns [marked as 5 on the map]). The grey path on the east by the residence is elevated as building 10 sits on a natural shelf in the cavern. The two brown lines are paths that rise up to it. The white buildings are shops, temples, residences, etc. The open space was dark ground strewn with boulders and pools of water heated by thermal vents. Think mordor but underground. I'm working on an update that will add more detail to the city.
Reply
Customer avatar
David E May 07, 2016 2:18 am UTC
PURCHASER
Cool, thanks.
Customer avatar
David E May 02, 2016 12:20 am UTC
PURCHASER
WRU part 2 in the trilogy?
Reply
Customer avatar
Brian M May 02, 2016 9:50 am UTC
CREATOR
Hope to get it done this summer. Unfortunately I'm too busy with my square job at the moment to write part two.
Customer avatar
Brian M March 11, 2016 2:16 pm UTC
CREATOR
March 11, 2016. Version 1.1 uploaded. Substantial reformatting, minor editing and corrections, additional maps and art added.
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File Last Updated:
November 15, 2016
This title was added to our catalog on February 08, 2016.