They were taking the north fork, down to Trinidad. From their elevator car they looked down on most of the Western Hemisphere, centered over the Amazon basin, where brown water veined through the green lungs of Earth. Down and down; in the five days of their descent the world approached until it eventually filled everything below them, and the crushing gravity of the previous month and a half once again slowly took them in its grasp and squeezed, squeezed, squeezed. What little tolerance Nirgal had developed for the weight seemed to have disappeared during the brief return to microgravity, and now he gasped. Every breath an effort. Standing foursquare before the windows, hands clenched to the rails, he looked down through clouds on the brilliant blue of the Caribbean, the intense greens of Venezuela. The Orinoco’s discharge into the sea was a leafy stain. The limb of the sky was composed of curved bands of white and turquoise, with the black of space above. All so glossy. The clouds were the same as on Mars but thicker, whiter, more stuffed with themselves. The intense gravity was perhaps exerting an extra pressure on his retina or optic nerve, to make the colors push and pulse so hard. Sounds were noisier.

In the elevator with them were UN diplomats, Praxis aides, media representatives, all hoping for the Martians to give them some time, to talk to them. Nirgal found it difficult to focus on them, to listen to them. Everyone seemed so strangely unaware of their position in space, there five hundred kilometers over the surface of the Earth, and falling fast.

A long last day. Then they were in the atmosphere, and then the cable led their car down onto the green square of Trinidad, into a huge socket complex next to an abandoned airport, its runways like gray runes. The elevator car slid down into the concrete mass. It decelerated; it came to a stop.

Nirgal detached his hands from the rail, and walked carefully after all the others, plod, plod, the weight all through him, plod, plod. They plodded down a jetway. He stepped onto the floor of a building on Earth. The interior of the socket resembled the one on Pavonis Mons, an incongruous familiarity, for the air was salty, thick, hot, clangorous, heavy. Nirgal hurried as much as he could through the halls, wanting to get outside and see things at last. A whole crowd trailed him, surrounded him, but the Praxis aides understood, they made a way for him through a growing crowd. The building was huge, apparently he had missed a chance to take a subway out of it. But there was a doorway glowing with light. Slightly dizzy with the effort, he walked out into a blinding glare. Pure whiteness. It reeked of salt, fish, leaves, tar, shit, spices: like a greenhouse gone mad.