This image is based on data obtained through two filters, a 756 nm near infrared filter and a violet filter. Color and contrast have been exaggerated to enhance the visibility of various features and the image has been processed with an unsharp mask to more clearly show small scale features. A true color version of this image can be seen here. There is also a well-known color version composed from three near-IR wavelengths that can bee seen here.
The image shows the GRS from the spacecraft's vantage point, i.e. it is not map projected. The viewing geometry is shown below.