The largest lava dome on Earth is still growing

Make a diagram: deliberately plain, drawn to be understood rather than admired, explaining one mechanism nobody outside the field understands. One still image, 4:3, briefed for a GPT Image 2 class model whose real ratio list is 1:1, 4:3, 3:4, 16:9, 9:16, 3:2 and 2:3. A diagram is the family where restraint is the skill: no drama, no glow, no dread. Depth to scale, one clear reading order, every element there because it carries meaning. FACT (locked, build on it, do not re-research): the Kikai caldera lies mostly under the sea south of Kyushu, Japan. About 7,300 years ago it produced the Kikai Akahoya eruption, the largest of the Holocene, which expelled roughly 160 cubic kilometres of material, around 32 times the volume of the 1991 Pinatubo eruption. A Kobe University study published on 27 March 2026 in Communications Earth and Environment found the magma reservoir beneath it sits unusually close to the surface, 2.5 to 6 kilometres down, and is being refilled by fresh magma injected from below rather than by leftovers from the ancient eruption. Over the past 3,900 years that rising magma has built a lava dome of more than 32 cubic kilometres on the caldera floor, the largest lava dome known anywhere on Earth. The same work informs how other giant calderas such as Yellowstone and Toba recharge after a major eruption. Use these exactly and leave out any figure we have not locked. TONE: this is a piece about being able to see inside something we could never see inside before. It is not a disaster warning, it carries no forecast, and it should not frighten anyone. GROUND (decide this, do not let the model default): tea toned kozo paper, a Japanese handmade sheet with long visible fibres, deckled at one edge, printed in two inks only. White, pale grey and navy backgrounds FAIL, and so do black background, orange glow and red hazard shading, which is the default this subject drags every model towards. LIGHT: flat and even, a printed sheet photographed square on. DISTANCE: the whole sheet at arm's length, the depth scale readable, the dome unmistakable. FLOOR (hard, this is the material standard): made with a real frontier image model, GPT Image 2 class or better. Flat vector, hand drawn SVG or HTML, and screenshot collage all FAIL. Text belongs to the artwork: type shares the piece's light, grain and material and reads as printed with it, never bolted on after. Archives will not be considered. CRAFT STANDARD (read all of it before you start). Composition: one clear focal that a stranger finds in under 3 seconds, then a second layer that rewards a longer look. Legibility: the piece will be judged first as a thumbnail on a phone, so the headline must survive at that size and any label too small to read there should not exist. Palette: 2 inks, that is the whole permission. Labelling: every label points at something real in the image, no floating decoration. Finish: real material behaviour, paper fibre, ink sitting in the fibre, plate edge, carried consistently across the whole frame including the type. DIRECTION is yours. FOCAL: the dome, sitting on the floor of the hole left by the old eruption, with the sea above it and the shallow reservoir beneath. YOUR CALL: whether the sea surface is in frame, and what single object you use to give 32 cubic kilometres a size a person can hold in their head. SURPRISE ME: the obvious take caps your score, the boldest true take wins. A plain drawing that suddenly makes the scale land beats a spectacular one that does not. JUDGED on wow, then subject, surprise, taste, craft, material. Depth must be to scale; if the reservoir is drawn at the wrong depth relative to the sea floor, the piece is disqualified. NOT THIS: no erupting volcano, no ash cloud, no lava fountain. No red and orange danger palette. No city in the foreground about to be destroyed. TEXT BUDGET: one headline that states the takeaway and names the subject, plus up to 6 small labels including a depth scale, only if they stay legible at phone size. NOTHING ABOUT HOW THE PIECE WAS MADE GOES ON THE PIECE: no process notes, no verification lines, no model or tool credit, no house credit, no timing or deadline text. Do not render any label from this brief, and never render the NOT THIS list, as type. Credit your model in the submission text instead. DELIVER: one finished hero image at the stated ratio, plus concept-note.md and sources.md. Self contained, no links out. Name your model in the submission text.