caption: The image shows an old postcard with a picture of a cave and a man standing in front of it. The man is wearing a long coat and a hat, and is holding a staff in one hand and a book in the other. The cave is filled with stalactites and stalagmites, and the man is standing in the middle of the cave, looking out into the distance. At the bottom of the postcard, there is text written in a decorative font.