A 4K, anatomically correct, masterpiece of a dark fantasy digital artwork featur

A 4K, anatomically correct, masterpiece of a dark fantasy digital artwork featuring a menacing, black dragon with glowing purple accents. The dragon has large, bat-like wings with sharp, jagged edges and a long, spiked tail, with intricate, high-detailed texture and muscles visible under its scaly skin. Its eyes and parts of its body emit a sinister purple glow, adding to its fearsome appearance. The dragon is perched on a large, skull-shaped rock in a desolate, swamp-like landscape with dead trees and a murky, foggy atmosphere, enhancing the eerie and ominous mood of the scene. The overall color palette is dark and muted, with shades of black, gray, and purple dominating the image. In the bottom left corner, the artist's signature 'IG' and 'Artvision' are discreetly displayed, adding a touch of authenticity to the foreboding artwork.