A deceivingly difficult cool looking puzzle.
If you try this without knowing the shape, looking at a final picture or using the base, it's pretty hard.
Add some color changes for added topography realism. Or just one color for more difficulty. No supports needed.
Obviously there are some simple tricks to solve it once you know them. It's really quite fun, and if nothing else looks cool. Cheers
The author hasn't provided the model origin yet.