A painting of a green man with a sword and a sword

A small, green-skinned, armored goblin stands in front of a dark opening in the cave wall. (goblin is young, goblin is warmly dressed, winter clothes) The goblin is wearing a helmet and clutching a spear tightly, acting as a sentinel. The details of the goblin's armor are visible, showing its hardened and battle-worn nature. The green skin of the goblin is vibrant and rich, emphasizing its otherworldly appearance. The lighting in the scene is dim, with a subtle glow emanating from the dark opening, casting eerie shadows on the goblin's face and surroundings. The overall image quality is of the highest standard, with ultra-detailed textures and a photorealistic rendering. The artwork is depicted in a medium that best showcases its unique style and texture, whether it be an illustration, oil painting, 3D rendering, or photography. The color palette is dominated by earthy tones, with a focus on various shades of green to complement the goblin's appearance. The scene is complete with additional details such as stalactites and stalagmites in the cave, creating a sense of depth and realism.