Sander is a crater on Mercury within Caloris Basin. It has dark walls and bright patches on its floor. Unlike the rays of Bashō crater, the bright areas are not believed to be immature, but they are inherently bright."A Closer Look at Albedo and Color Variations on Mercury", Johns Hopkins University, Applied Physics Laboratory It is named after the German photographer August Sander (1876–1964)."A Trio of Craters: Munch, Sander, and Poe", Johns Hopkins University, Applied Physics Laboratory
Hollows are present within Sander. A confirmed dark spot is present in Sander.Zhiyong Xiao, Robert G. Strom, David T. Blewett, Paul K. Byrne, Sean C. Solomon, Scott L. Murchie, Ann L. Sprague, Deborah L. Domingue, Jörn Helbert, 2013. Dark spots on Mercury: A distinctive low-reflectance material and its relation to hollows. Journal of Geophysical Research Planets. doi.org/10.1002/jgre.20115 This dark spot is associated with the hollows.
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