Keelut is a crater on Jupiter's moon Callisto. It measures 47 km across. In the upper part of the image degraded Reginleif crater is visible. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Callisto they are named after characters from myths and folktales of cultures of the Far North.
Image Source. Marker locations are approximate and may not always appear to align with image on map.