Captions should consist of a paragraph describing the features that you see in the image. You can focus on an interesting part of an image or the entire image. The "observation geometry" paragraph in existing captions will automatically be included in your captions so there is no need to worry about these details. We have set up a discussion thread for each image to help you share your caption ideas with other participants and with us. These images and final captions will be released on the main HiRISE website along with the names of contributing groups and the name of the original suggestor!