Here’s my pyramid with a couple stock models added in. Rendered in Cycles (1024 samples and some other settings tweaked), lit with an HDRI (left on in the render, since the mountain seemed to fit the scene) plus a custom moonlight lamp. The stock models came with their own textures, and the stone and grass were from my texture library. Admittedly, the grass does not look awesome but I kind of had to put a pin in this one and move on. If I come back to it, I’ll probably add a fog volume or two at ground level.
Slight compositing done in Photoshop (contrast curve and 5% opacity dark black-blue overlay).