ancient castle, Dawnguard fortress, mountainous terrain, pine trees, snow-covered peaks, medieval architecture, stone walls, wooden gates, torch-lit entrance, vampire hunters, armored figures, crossbows, misty atmosphere, overcast sky, dynamic lighting, wide-angle shot, fantasy setting, RPG game environment, immersive detail, rugged landscape, distant waterfalls, Skyrim, Elder Scrolls series, atmospheric mood, sunset glow, dramatic shadows.