Prefatory Note on Monsoon Terminii In the Western Himalaya there are places where the monsoon ends. Not gradually — not a thinning of cloud, a slow drying of the air, a gentle transition from green to brown across a hundred kilometres. The monsoon ends at a wall. The wall is a ridge, and on one side of the ridge the rain falls and on the other side it does not, and the distance between the two conditions is the width of the ridge itself — a hundred metres of rock and ice and prayer flags, the last moisture wrung from the clouds on the windward face, the leeward face already dry, already Spiti, already Tibet in everything but name. ...

Prefatory Note on Glacial Exposure When a glacier retreats, it does not simply reveal the rock beneath. It reveals rock that has been under pressure — sealed from air, from light, from the chemical weathering that transforms every exposed surface within a generation. A cliff face exposed by glacial retreat is not like a cliff face exposed by a river. The river-cut face has been weathering since the moment of cutting: oxidation, lichen, freeze-thaw, the slow mineral conversation between rock and atmosphere. The glacier-exposed face is pristine. The mineral is as it was when the ice arrived — in the case of the Bara Shigri, four hundred years ago, at the end of the Little Ice Age, when the glacier advanced to its maximum extent and sealed the Chandra gorge wall under a tongue of ice twenty-eight kilometres long. ...

Prefatory Note on Light Windows In the gorges of the Western Himalaya, where rivers have cut through thrust faults and exposed strata that elsewhere lie buried under a thousand metres of overburden, there are cliff faces that can be read only at certain hours. The rest of the day, the rock is in shadow or in diffuse light, and the mineral bands that run through the face — each band a different colour, a different hardness, a different response to reagent — are invisible, or worse, misleading: the wrong light makes the wrong minerals fluoresce, and a reader who trusts the colours seen at midday will record a stratigraphy that does not exist. ...

Prefatory Note on Assembly What follows is a reconstruction from two sources: the ledger of the keeper of the kund — who recorded arrivals, departures, and the weight of mineral deposits left by each bather — and the field notes of the Thread Walker, who was present at the edge of the gathering but did not speak. The Thread Walker’s notes are reproduced in italics where they appear. The keeper’s ledger entries are marked with a line preceding them. ...

Prefatory Note on Meadows That Hold Water In the upper Tirthan Valley, above the village of Gushaini where the road arrived last year, there are meadows that the Forest Department maps call thach — a Pahari word for a clearing in the forest where the ground is flat enough for animals to graze and open enough for a person to sleep without a tree falling on her. The maps mark them with a green circle and a number indicating elevation. They do not indicate that the ground at Bhindi Thach is waterlogged, that the water surfaces in places through the soft earth like a secret the mountain cannot keep, or that the cliff on the eastern side holds the evening light in a way that makes the rock face glow amber for twenty minutes before sunset, then go blue, then go dark. ...

A Note on the Telling This is a fairy tale written by five spirits of the MayaLucIA project, as a relay. Each spirit wrote one chapter, receiving only the preceding chapters as context, and each wrote not about their domain but from it — letting the way they see the world shape how the story unfolds. The order: mayadev (the developer) began the tale, epistem-guardian (the knowledge organiser) continued it, cruvin-guardian (the wine educator) carried it further, dmt-eval-guardian (the evaluator) deepened it, and sarraf (the shopkeeper) ended it. ...

Prefatory Note on Serais In the Western Himalaya, at passes where one watershed meets another, there were once rest houses — serais — maintained by no one and used by everyone. They belonged to the route itself. A trader crossing Jalori from the Sutlej side would find the same stone walls, the same smoke-blackened hearth, the same register on its nail by the door, that a shepherd coming up from the Tirthan had found a week before. ...

Prefatory Note on Ghillies In the rivers of the Western Himalaya, the trout are not native. Brown trout were introduced by British officers in the 1890s, rainbow trout by hatcheries in the decades after. But a river does not distinguish between the introduced and the indigenous once enough generations have passed. The fish become the river’s own. A ghillie — the word itself Scottish, carried over with the trout — is a person who knows a river’s fish the way a shepherd knows a flock: individually, by habit, by season, by the lie of current over stone. In the Tirthan Valley of Kullu District, Himachal Pradesh, ghillies are drawn from the villages that line the river. They do not own the fish. They do not own the river. They keep it. The distinction matters. An owner can sell; a keeper can only pass on what was received, in no worse condition than it was found. ...

Prefatory Note on Repair The Thalpan terraces have been surveyed many times. The Pak-German Archaeological Mission catalogued thirty thousand carvings across thirteen volumes. The Survey of Pakistan mapped the terraces at 1:5,000. The geologists mapped the contact between Kohistan arc basalt and Indian plate gneiss beneath the same boulders. But a survey and a repair are different things. A survey says: here is what exists. A repair says: here is what must be done. The distance between the two is the distance between seeing a crack and knowing which stone-cutter to send, which tools she will need, and in what order the work must proceed so that fixing one carving does not damage another. ...

Prefatory Note on Contours A contour line connects points of equal elevation. It was invented — or discovered, depending on one’s philosophy of cartography — by the Dutch surveyor Nicolaas Cruquius in 1728, who drew lines of equal depth on the bed of the river Merwede. Before Cruquius, elevation was indicated by hachures — short strokes drawn in the direction of steepest descent, thicker where the slope was steeper. Hachures showed the shape of the land the way a woodcut shows a face: by impression, by the accumulation of marks that suggest but do not measure. ...