8-bit pixel art, Generate a detailed treasure map for an adventurous. The map should include diverse terrain features, such as mountains, forests, rivers, and a hidden cave. Place an 'X' on the map to indicate the exact location of the buried treasure. Describe the surroundings, landmarks, and any obstacles that the treasure hunter might encounter on their quest. Be creative with the elements, ensuring an intriguing and challenging journey for the one seeking the hidden treasure --ar 16:9