Urban and agricultural lands occupied more than 40% of all land surface globally in 2022. Most of these areas are managed through industrial processes that deplete the soil, pollute the water, annihilate biodiversity, and contribute to runaway carbon emissions. It’s all anthropogenic sprawl. Large scale ecological and hydrological restoration, by way of transforming anthropic land use, is essential if we hope to prevent further climate catastrophe. Focusing specifically on soil health would have implications that reverberate throughout the entire ecosystem. Soil stores more carbon worldwide than is contained in all plant biomass above ground. Healthy soil prevents erosion and mitigates drought and flood due to its ability to absorb and store high quantities of water. Soil is a living composition of multispecies entanglements that determines the viability of plant and animal life above ground. Humans are agents in soil production as much as ants, worms, bacteria and fungus, and thus locate our place within these systems of exchange, rather than without. Gunkspace is a methodology that demonstrates how agroforestry principles that promote decentralized modes of soil care infrastructure can be integrated into urban and agricultural areas with the hydrological basin serving as a scaling device that zooms in to the narrowest street and all the way out to the entire planet: it’s all connected! What’s more, it can all be done within the existing frameworks that govern much of our anthropocentric space today — in the interstices where gunk already accrues or where it could. The first case study is the Matanza-Riachuelo river basin in Buenos Aires, Argentina, which is the most polluted waterway in the country. In other words, if this basin can be restored, any basin can be. http://gunkspace.comArchitecture, Urbanism and Building Science