A dormant underground parking lot in Paris has found new purpose serving as a farm for growing organic fungi. The low-light produce is then sold to local organic grocery stores, shortening the distance from farm to table a step further. “La Caverne,” or “The Cave,” is one of three converted subterranean spaces founded together by agronomist Theo Champagnat and Cycloponics, a startup specializing in repurposing disused urban undergrounds. Its dark, damp conditions are perfect for growing oyster, shiitake, and white button mushrooms: Cycloponics’s main crops. Besides mushrooms, the project also cultivates microgreens and endives (flowering plants with edible leaves common in northern France), which can grow in the dark. La Caverne offers preferential rates for local clientele as well as educational tours for sightseers and schools in the neighborhood. “Seventy percent of people live in cities today,” Champagnat told Brut, “and within this population there is a demand for local and organic products like …