ALT NASA astronaut and Artemis II mission specialist Christina Koch stands in the desolate landscape of Iceland during a geology field training course. Koch is wearing a rust-colored windbreaker and long black pants, both of which are drenched in water. Credit: NASA/Robert Markowitz

ALT The Artemis II crew and backup crew members trek across the Icelandic landscape during their field geology training. The dark, rocky landscape dominates the image, with the crew barely visible as a group of small figures left of center. Credit: NASA/Robert Markowitz

ALT The Artemis II crew astronauts, their backups, and the geology training field team pose in a valley in Iceland’s Vatnajökull national park. The group of about twenty is arranged in two loose rows, one standing in the back and one sitting on a large rock in front. The background is grey and rocky, with a large mountain in the distance. Credit: NASA/Robert Markowitz