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Grotto Tunnels


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The Grotto Tunnels set is a tunnel system for fantasy tabletop and role-playing games. It includes tunnels, crossroads, corners and dead ends of various sizes. There are holes underneath each piece to fit 3mm diameter magnets. This pack is part of the Goblin Grotto cavern tile system and is compatible with the Grotto Floors and Grotto Walls cavern sets to create vast caverns.


This product is part of the Full Regional License to Print (Monthly Payments) or Goblin Grotto Add-On. Please log in if you backed the campaign.

This product is delivered as a .ZIP file pack containing STL files for use on a home 3D Printer. The files are set to 28mm scale but can be rescaled before printing.


The tunnels twist and turn into a never ending maze. Adventurers delving into the dark corridors need to keep wary. Monsters could be lurking around any corner or waiting to ambush in narrow corridors and dead ends. 


  • 25 February 2020 (version 1.1) A replacement T intersection has been added and the old T intersection has been changed to Y.


  • Right-click on the image below and “Save As” to download the reference sheet for this pack.
  • Product measurements can be found in the image gallery.

Additional information



Layer Height

.2 for Normal Quality .1 for High Quality (.2 Layer height is recommended)


Prints without Supports

4 questions for Grotto Tunnels

  1. paso_fabri (verified owner)

    I wanted to know what those 3mm holes on the bottom of the models are for. thank you so much.

    • Sam Campbell (verified owner)

      3mm holes are for small magnets.

  2. steve_trib (verified owner)

    What are the magnets supposed to stick to? i put a metal plate under everything ? im confused

    • Sam Campbell (verified owner)

      This was a customer request and yes you can put it on a metal plate, but you don’t have too.

  3. jonchappellnow (verified owner)

    I see three sets of Grotto Tunnels, but no half height tunnels. I really like the half height grotto walls because it is much better for tabletop play because players don’t need to stand up and “look down” into the dungeon.

    Did I miss the half-height grotto walls somewhere? Or, does Printable Sceneary have any pans to make any? That would be awesome — even if it just ment modifying these ones to make the walls half height.

    • Jo Boorer (verified owner)

      Thanks for your suggestion.
      I will add this to our model updates list.

  4. jonchappellnow (verified owner)

    Thanks! These tunnels are spectacular, but for tabletop play half height is the way to go. Someone on facebook suggested printing them at half Z height, scaling them flatter, but this would negatively all of the great sculpting work you guys did on the grotto floors.

    • Matt Barker

      Thanks, we could look at some half height versions in the future.

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