This image is based on data obtained through two filters, a 756 nm near infrared filter and a violet filter. In this image, 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. An enhanced color and contrast version can be found 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.