Zo spent most of every day working on the outer apron or under it, grinding out as much of a full work stint as she could before it came time to leave for the outer satellites. The work this time was interesting, involving long trips underground in mining tunnels, following veins and layers in the crater’s old splosh apron. The impact brecciation had created all kinds of useful metamorphic rock, and green-house-gas minerals were a common secondary find throughout the apron. The co-op was therefore working on new methods of mining, as well as extracting some feed-stocks for mesh looms, hoping to make marketable improvements in mining methods that would leave the surface undisturbed while the regolith under it was still being mined intensively. Most of the underground work was of course robotic, but there were various human-optimum tasks still, as there always would be in mining. Zo found it very satisfying to spelunk in the dim submartian world, to spend all day in the bowels of the planet between great plates of rock, in caves with their close rough black walls gleaming with crystals, the powerful lights exploding off them; to check samples, and explore newly cut galleries, in a forest of dull magnesium uprights jammed into place by the robot excavators; to work like a troglodyte, seeking rare treasure underground; and then to emerge from the elevator car, blinking madly at the sudden sunlight of late afternoon, the air bronze or salmon or amber as the sun blazed through the purpling sky like an old friend, warming them as they trudged up the slope of the apron to the rim gate, where the round forest of Moreux lay below them, a lost world, home to jaguars and vultures. Once inside the mesh there was a cable car that dropped on looping wires to the settlement, but Zo usually went instead to the gatehouse and got her birdsuit out of its locker, and slipped into it and zipped up, and ran off a flier’s platform and spread her wings, and flew in lazy spirals down to the north rim town, to dinner on one of the dining terraces, watching parrots and cockatiels and lorikeets dart about trying to scavenge a meal. For work it was not bad. She slept well.