#Mars: Helicopter in the deep canyons of Mars. Bob Zimmerman, BehindtheBlack.com
Jun 23, 2022, 12:48 AM
Photo: Valles Marineris topographic view constructed from MOLA altimetry data. Image shows Coprates Chasma, with Melas Chasma at the top, Candor Chasma at top right, and part of Capri Chasma at the bottom