In the first episode of The New Adventures of He-Man, "A New Beginning", we see Snake Mountain in all its glory. It is clear that the artists looked to the Filmation show for inspiration. However, the magic and overpowering sense of evil that was evident in the Filmation show is not apparent here. This could be any old background. That said, it is nice that they decided to pay homage to the original series.
(click on the image to see it at full-size)