Lots of prompting and tweaking, so not just one prompt. Here it is in short:
"a surreal 3D digital artwork depicting a small human figure lost in a vast, distorted alien landscape with vibrant yet unsettling colors and dramatic lighting. The tiny figure is overwhelmed by towering forms and impossible geometry, creating a dreamlike yet nightmarish quality, detailed intricacy and masterful use of light and color, reminiscent of Hieronymus Bosch or Salvador Dali