Cassini Imaging Science Subsystem observations of Titan’s south polar cloud

•We document the shape, texture, color, and altitude of Titan’s S. polar cloud.•The altitude of the cloud is 300±15km.•The cloud rotates in 8h about a point offset from Titan’s spin axis.•Cloud texture suggests a condensate (HCN) in an open-cell convection pattern.•Cloud optical thickness is ∼1.5.