Shortly after their Castle Grayskull, Icon Heroes went one better and released the whole of Snake Mountain as a polystone statue. Like the castle, this massive piece of scenery works well enough with 28-30mm figures and sports a glorious paintjob to boot.
30mm Skeletor in the center for scale:
The sides and back (tiny 30mm Skeletor for scale):
Bird's eye view:
Some detail shots:
And a size comparison of the full Castle Grayskull set with Snake Mountain and the tiny He-Man and Skeletor figures: