This is the swirling surface of algae rich flood water in the now abandoned C Station at Abbey Mills in east London. When the sewers of London began to overflow, the Abbey Mills pumping house was built to alleviate the pressure. While impressive looking, the station is no longer the main artery of London’s sewer system. There is a new, much less decorated facility next door—but the pumping station, nicknamed “The Cathedral of Sewage,” is still armed with electric pumps just in case. Read more about the "sewage cathedral" at the link in our bio. 📸: Photo by @forgottenheritage.