I love the color scheme you've got going here. You balanced warms and cools very nicely. I also like the textures you're using. I'd add even more texture onto the foreground rocks so that they're brought forward even more. By indicating that texture in a more refined way there, it lets us know that the rest of the rocks have that same surface. I'm also a bit confused by the mass in the middle. On the thumbnail version I thought it was sand, then, clicking on it, it looked like water. The longer I'm looking at it, the more it seems like water. I'd add some more reflections and spots where the light is refracting to really let us know that it's wet.
This is really nice, I love the atmosphere, but I think the objects in the back could be faded out even more and you could have more large rocks in the foreground to emphasize depth in the landscape.
There are very pretty, subtle color shifts throughout this whole piece! I would just define those edges and cracks in the foreground a little bit more in select places in order to make us feel like we're closer to those rocks. I think the rest of the landscape would take care of itself after that adjustment, as far as depth is concerned.