The first thing to understand about a qanat is that you cannot see most of it. What you see here are the spoil mounds, row after row of low craters stretching up a gravel slope, each one marking a vertical shaft dug by hand to reach the tunnel beneath. The Qanat of Gowhariz belongs to the group of Persian qanats that UNESCO inscribed in 2016, and it lies in the foothills southeast of Kerman, close to the oasis town of Mahan, in a country of dry gravel fans and brown mountain walls.
A qanat is a gently sloping tunnel that taps groundwater high in the hills and lets gravity carry it, underground and out of reach of the sun, to fields and villages many kilometres away. The idea is thousands of years old and it is why people could live in places that get a few centimetres of rain a year. Gowhariz is celebrated for its depth, a well-known mother well sunk far deeper than most, and for the ingenious detail of the whole system, with its shafts, water mill sites, and the rules by which water was shared out by time rather than volume. Families owned hours of flow, and an old watch-keeper once measured them by a bowl floating in a jar.
Kerman is a bit under thirty kilometres away and is where you buy fuel and food. The road down from the city towards Mahan is wide and fast, an easy run across open desert basin, with the Jabal-Barez range along the horizon. Heat is the main variable. From June to September the middle of the day is brutal and the sensible schedule is up at dawn, finished by early afternoon. In spring the slopes can turn faintly green, and in winter the light is clear and cold, with snow often visible on the higher ridges.
Combine it with Bagh-e Shahzadeh, the Prince's Garden near Mahan, where a ribbon of water runs down terraces between cypresses and pools, which makes the underground idea suddenly visible, because the same logic of channelled water produces that green order in a bare landscape. A wide hat and a bottle you actually drink from matter more here than any piece of kit.