Prologue It was the night of the blood moon. The term was coined by Bible Belt millenarians who believed the phenomenon--a lunar eclipse when the full moon is at its perigee, therefore magnified and pink--portended Armageddon. Joel 2:31: "The sun shall be turned to darkness and the moon to blood before the great and dreadful day of the Lord comes." The timing was just good fortune but it turned out I''d have among the best views on earth. In my ignorance it was its redness I anticipated as much as its bigness or for that matter the fact that it would be eclipsed, and so when it rose into view, more embers than blood, I was disappointed--as disappointed as one can ever be by a new-risen full moon. By the time I''d rehydrated my noodles and poured my daily half-beaker of wine, the moon had returned from grey-pink to its customary white, like a fingertip pressed against glass, and every cactus and every shrub, and the strawbale cabin, had generated a hard exclusive shadow. It seemed to me that the chief characteristic of night in the desert was not darkness but this light that was not the sun''s. *** The cabin stands on a ridge above the San Pedro River sixty kilometres east of Tucson, Arizona.

It is a one-room structure about three metres by five, with a door facing north-east. In each of the other three walls is a single window, screened with mesh against insects. It''s nice to open the windows to the evening breeze, but during the day they stay shut to keep out the heat. The interior walls are thickly plastered, bumpy and cracked. The floor is packed earth laid with two rugs heavily nibbled by mice. Furniture: a cabinet for cooking utensils, a folding steel cot and mattress, a pine table and matching chairs, and an iron-banded trunk a century old, containing Mexican blankets, batteries and a first-aid kit and dozens of candles. The table resembles an altar. On it, most of the time, stands a storm lantern and a bottle of screw-top Cabernet Merlot ($8.

99, Trader Joe''s). Each of the four windows (there''s one in the door) gives onto a hillside thick with mesquite, paloverde, creosote bush, ocotillo, prickly pear, barrel cactus, and saguaro, the region''s characteristic cactus, the cactus of cowboy films. It is the saguaros'' giant candelabra forms that break the line of each hillside and provide landmarks. The tallest for kilometres stands beside the cabin. From the south-west-facing window you can see the Rincon Mountains, with the Little Rincons before them, dropping down to the San Pedro Valley, and the few dwellings of the Cascabel community ten kilometres away. When the sun rises behind me, a blade of light drops from the distant peaks of the Rincons, down the foothills and towards me across the alluvial plain, until slowly, like a lava flow, the threshold where light meets shadow approaches the cabin--and then: there! The warmth as the sun''s rays touch the back of my head and my shadow is thrown down long before me. From a hook fixed to a rafter-end I hang a kettle of water on a bungee each morning, and by 6 p.m.

it is hot enough for a shower. On the cabin''s opposite side, where there is more shade, lies the two-hundred-litre drum that provides all my water, raised on a bed of rocks and protected against the sun with a jacket of wire-strung saguaro ribs. The ridge separates two washes (dry, except after cloudbursts): one is broad and shallow, the other is deep and narrow and what they call an arroyo. The ridge rises to the north-east--halfway up this hill, about thirty metres from my door, is a double wooden frame into which two identical square boards are slid, each painted white on one side and on the other red. Every evening, before my shower, though I don''t always remember, I walk up the hill along a path marked out with rocks on each side, and slide out the boards, flip them over, and slide them back into the framework. From the ridge near his home down near the San Pedro, my friend Daniel checks each morning with his binoculars, if he remembers; if the boards do not change for a day or two, he''ll come and make sure I''m okay. There are a few books here: a natural history of the Sonoran Desert and a book about the dangerous animals of the region, every one hair-triggered, you''d be forgiven for inferring, to sting you, bite you, maul you, or char you with its fiery breath. My own contribution is a paperback facsimile of John C.

Van Dyke''s 1901 book The Desert . It describes a man''s journey, alone, into this desert, the Sonoran, a journey made chiefly in 1898, though its precise course is unclear. He was an accomplished art historian, but trust Van Dyke''s guidance at your peril. Here he is, homicidally, on the subject of food and water, for instance: "Any athlete or Indian will tell you that you can travel better without them. They are good things at the end of the trip but not at the beginning." Rattlesnakes he describes as "sluggish." He shoots grey wolves in California, where there were no wolves, and eulogises the purple flowers of the saguaro, which are white (though the fruits are red). Alerted to certain errors by a well-meaning desert ecologist, he graciously acknowledged the mistakes, promised to correct them in future editions-- The Desert had a long life--and so far as is known made no effort to do so.

A note appended to the manuscript of his autobiography spells out his aim: "to describe the desert from an aesthetic, not scientific, point of view." I no longer sleep inside but, after my sunset shower, drag the cot out to the clearing in front of the door, where I am not disturbed by the lizards in the roof--or, more accurately, where the noise they make is subsumed by the larger racket of the desert at night. I lift each of the bed''s feet and slip containers of water under them--tin mugs, a wooden saucer, a saucepan--to keep conenose kissing-bugs or scorpions from joining me. I position the two chairs beside the bed, one at the foot, one alongside my head, and stand lanterns on them. In a row on the ground between them half a dozen candles are stationed. In the mornings the hardened wells around their wicks are black with flying insects. Within this lit perimeter I sleep more easily than I have for months, which is not to say deeply. Waking in the night to the buzzing of cicadas or the yapping of coyotes, I experience a weight of tranquillity that has the quality of a quilt.

It might be the peace of the dying. Most afternoons, as the warmth first intensifies like an oven preheating, then levels off at a temperature that permits nothing but sitting in the cabin''s shadow cowled in a wet scarf, I try to remember how the song goes: High on a hill was a lonely goatherd . One little girl in a pale pink coat heard . This is my main afternoon work: to remember the words. And day by day, one by one, they return to me, though it''s a year since I last heard the song, coming from a cracked Samsung smartphone on the edge of the Worst Desert on Earth, while to the north a massacre was happening. 1. The Desert Library The Empty Quarter, Oman It seems a long time ago. The woman I''d lived with for four years had taken a job overseas.

I would not be going with her. The summer before, in the name of research, I''d spent a week with a community of Cistercian monks on the edge of Dartmoor in south-west England. I attended each of the abbey''s sacred offices--matins at 5:45 a.m., lauds an hour later, Mass at 8 a.m., vespers at 6 p.m.

, compline at 9--and took meals in the vaulted refectory. As the days passed, each office became indistinguishable from the next. I''d sit at the high open window of my room, looking out from time to time to follow the swallows as they spiralled over the cloister roof. When the bell tolled, I would put down whatever book I was reading, and go alone down the long stone staircase, three flights, and wait in the chapel for the twelve monks to enter, one by one, and take their places along the walls on either side. I stood at the back and listened to their plainsong. It was in the monastery library that I became aware of the connection between Christian monasticism and the desert. I would make a pile of books and carry them up to my small room, and spend the time between offices reading. I learned about the Desert Fathers, the third-and fourth-century solitaries of Upper Egypt, and the first of them, St.

Antony. Antony was born in AD 251 in Upper Egypt, the son of a wealthy Christian family. At the age of nineteen, following the deaths of his parents, he happened to pass a church and hear the words of Matthew 19:21: "If you would be perfect, go and sell that you have and give to the poor." Antony obeyed and put his younger sister in a nunnery. To give up your possessions, to remove from your life those you love: these are a monk''s first acts, but they might also be described as consistent with grieving. Artistic depictions of St. Antony--"the Star of the Desert"--fall into two categories, each illustrating a central scene in the saint''s life: the first shows him in his nineties meeting the dying St. Paul, having walked fifty kilometres from his cave on the other side of Egypt''s South Galala Mountains.

It is this scene that Velázquez''s St. Antony Abbot and St. Paul the Hermit depicts: the dying saint, his beard whiter than his companion''s, sits on a rocky outcrop, hands fused in prayer, while Antony looks on in awe. Just above their heads a raven descends with a loaf of bread. The bird appears in every image of St. Antony and St. Paul, and its presence alone identifies the human figures. The other scenario in which St.

Antony is depicted shows an early, more tumultuous period in.