This is a remix by Jvanier Thanks for creating the base model!
Found the Duplo Cliff on Thingiverse and decided to Improve upon it. I however printed the version with the duplo nubbins which didn't fit (the hollow ones) but I already fixed that problem. I also adjusted the height of the windows, they should fit now. But I didn't reprint it.
If you want to have a ceiling to hang stuff from you can Print one and glue it in place.
I added Support between the duplo knobs and it worked out fine. But still this is a massive Print which consumes a lot of Filament, but maybe you have one or two laying around which you dont like ;-). You want to have a strong wall perimeter and thick bottom and Top layers if you print it for a Child. The Infill isn't that important.
If you want the water effect, just change the Filament at the right layer.
I also added a version with two doors, if you might want to print multiple cliffs.
The author remixed this model.