Cisadane Estuary is one of the estuaries on the island of Java, specifically in Tangerang Regency. Starting from rubbish that was washed away by river water, a small land that was previously empty and only inhabited by mangrove plants, has now turned into an island of rubbish. For years, rubbish from the area around the Cisadane River, Tangerang, has been stuck on the small island, causing the rubbish to pile up and harden like soil. Now, after many years, residents of Tanjung Burung Village, Teluknaga District, Tangerang Regency, Banten, are complaining about the existence of a waste island at the mouth of the Cisadane River. Residents said that most of the rubbish was industrial and household waste. Apart from polluting the environment, this rubbish also makes the Cisadane River estuary shallow. Until 2021, LindungiHutan has planted 429 trees in a 429 ha area and absorbed 51 kg CO2 ekv.