Japan
Aso Caldera
A volcano still breathing inside one of the world's largest inhabited calderas.
The caldera is too big to see from inside. Twenty-five kilometres across, it swallows towns, farms, railways, and 50,000 residents who live their daily lives inside a volcano. Aso in Japan's Kumamoto Prefecture is the world's largest inhabited caldera, and at its centre, Mount Nakadake's crater still smokes, still rumbles, and still occasionally closes the roads.
The Aso caldera formed through a series of catastrophic eruptions between 270,000 and 90,000 years ago, the largest of which buried most of Kyūshū under pyroclastic flow. The grasslands inside the caldera — maintained by annual controlled burns for over 1,000 years — are the largest managed grasslands in Japan. Mount Nakadake's crater contains an active vent and a turquoise acid lake, accessible by road when volcanic activity permits. Paragliding from the caldera rim offers aerial perspectives of the entire volcanic landscape, and local ranches within the caldera raise grass-fed cattle and Akamushi red Wagyu beef.
Friends
Paragliding into a volcano, hiking the crater rim, and grilling Akamushi beef at a caldera-floor campsite — Aso is built for groups who want stories.
Couple
The grasslands at golden hour, the smoking crater at dawn, and a yurt stay inside the caldera create a landscape romance on a geological scale.
Solo
The sheer scale of Aso — driving the caldera rim, staring into the active crater — creates a solitude that feels both humbling and exhilarating.
- The world's largest volcanic caldera stretches 25 kilometres across, with an active crater still belching sulphur.
- Grasslands inside the caldera roll for miles — managed by controlled burns every spring for 1,000 years.
- Paragliding from the caldera rim gives aerial views of the smoking crater and the patchwork farmland below.
- Yurt camps and converted farmhouses sit inside the caldera floor, surrounded by grazing horses.
Akaushi red beef raised on the caldera grasslands, marbled differently from wagyu.
Takana-meshi — mustard greens pickled sharp and mixed through steaming white rice.
Todra Gorge
Morocco
Three-hundred-metre canyon walls closing to ten metres apart, river echoing in the slot.
Rincón de la Vieja
Costa Rica
Volcanic mud pots belch and bubble through dry tropical forest like the earth digesting itself.
Tre Cime di Lavaredo
Italy
Three vertical rock towers punching through alpine cloud, their shadows sweeping across scree fields.
Kerio Valley
Kenya
Paragliders step off a 1,500-metre escarpment into thermals that sweep Kenya's most dramatic valley floor.
Shimanami Kaido
Japan
Six bridges island-hopping across the Inland Sea on a bicycle lane suspended over blue.
Iriomote
Japan
Subtropical jungle covering 90% of an island where the wildcat skulks and no road crosses.
Hachijojima
Japan
Subtropical volcanoes and black sand surf three hundred kilometres south of Tokyo by air.
Shirakami-Sanchi
Japan
Eight thousand years of virgin beech forest untouched by axes or roads.