The South Pole of the Moon, unprojected. A 75 degree south bump map in stereographic projection unprojected and plotted as a 3d surface. The coloring is a gradient that emphasizes the curvature. Pixels in the original 485×485 file are 1920 meters apart. From a 240 meter original: ldem_60s_240m.jp2. The landscape is 30 degrees across, or 931km. (578 mi, about the distance from Detroit to Boston.)
I created a dome on the same grid whose base touches the corners and then added the heights from the bump map. The addition should be radial instead of parallel, but this produces an error of less than 2 percent at the corners.
A relief plot of the above.
South Pole of the Moon, double-height.