Gollum lurking in an eerie forest, glistening with an unsettling sheen, intricately detailed with photorealistic textures, dynamic and ominous lighting casting long shadows, extreme nightmare rendition blending mystical and magical elements with a spine-chilling atmosphere, inspired by the styles of H.R. Giger, Jean Ansell, and Justin Gerard, radiating an otherworldly glow, capturing the sinister ambiance of a classic movie scene, depicted in various poses to highlight his full, contorted form and haunting presence.