South-polar features on Venus similar to those near the north pole. (Nature, 2007)

(untitled) - Piccioni, G; Drossart, P; Sanchez-Lavega, A; Hueso, R; Taylor, F; Wilson, C; Grassi, D; Zasova, L; Moriconi, M; Adriani, A; Lebonnois, S; Coradini, A; et al.