The image shows a yellow sign hanging from the ceiling of a subway station. The sign is rectangular in shape and has the word "Platform 3" written on it in bold black letters. Below the sign, there is an orange sign with the number 3 written in white letters. On the right side of the image, there are several other signs and information boards. The background is dark, and the ceiling is made of concrete. The image appears to be taken from a low angle, looking up at the sign.