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Grotto Cavern Transitions

(6 customer reviews)


The Grotto Caverns Transition set contains a number of pieces used for transitions between different dungeon environments to Grotto Tunnels and is compatible with the Goblin Grotto cavern tile system. This set is compatible with all other OpenLOCK products.

Download the Rampage Base Pack for free to get the latest version of the OpenLOCK clip.

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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 Goblin Grottos under the city of Clorehaven was vast and labyrinthine. So insidious was the goblin incursion into all areas of the city, from the mines and quarry to the sewers and cellars.

This set includes transitions pieces to the following sets:


  • 6 May 2021: removed geometries that were interfering with print


  • 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

6 questions for Grotto Cavern Transitions

  1. Avatar

    Nikolaj_Uhrenholt (verified owner)

    In “Grotto-Ramp-Transition-v1.1.stl” the bottom is not even. Had to cut a small portion off the model for it to lie flush on buildplate.

    • Avatar


      Hi Nikolaj,

      Thank you for pointing this out to us. We’ve done a quick update and the bottom should be flush on the buildplate now.

  2. Avatar


    is there a reason this isn’t included with the grotto bundle?

    • Avatar


      Hi Gmaddox69,

      These were a bonus item as part of the All-in pledge for the Clorehaven & Goblin Grotto kickstarter so were free if you went in on that. If you did go all-in but didn’t receive them send an email to [email protected] and we’ll get you fixed up 🙂

  3. Avatar

    johnwfree313 (verified owner)

    Is there a possibility of getting a version of these that work with the OpenLock Grotto Cavern Walls and Floors?

    • Avatar

      Mike (verified owner)

      Hi John,

      Thanks for your suggestion! I’ll add it to our list of possible future updates

  4. Avatar

    Tony Crawford (verified owner)

    Hi guys, would it be possible to have one of these made with the rough stone floor? It seems to be the only one missing out of main floor types you guys sell.

    • Avatar

      Nicholas Jebson

      I didn’t realize we hadn’t put these on! We can line it up for an update but I’m unsure when we will get to it. If you have it, the Grotto pieces are now available in terrain tinker so you should be able to make it pretty easily with that function, as it works almost exactly the same as how we originally made the transition tiles.

  5. Avatar

    Tony Crawford (verified owner)

    Hi Nicholas,

    This is excellent news! If I can make my own using Terrain Tinker then that means I can also create some for the more rare floors and walls like the ones for the Open Lock Pyramid of the New Eden set and others, and change out some of the floor and wall types for other pieces too. Thanks for letting me know this was possible in Terrain Tinker.

    • Avatar

      Nicholas Jebson

      No problem, they are a fairly recent addition to Terrain Tinker so people are still working out what they can do.

      When we put them together we used the Grotto Tunnels Entrance, Grotto Tunnels Short Straight and then whichever floors and walls we wanted to transition them into.

  6. Avatar

    Ian DeTreville

    if i buy the goblin grotto add on are these included?

    • Avatar

      Jo Boorer

      These are part of the bonus items that backers got when backing both the Goblin Grotto and Clorehaven during the Kickstarter.

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