Hari Yanto, also known as Harkuk or Hari Kikuk, is a member of Kaoem Telapak who was originally born from East Java and is currently active in the Bogor Regency, West Java. Harkuk has a long record of pioneering the conservation of water catchment areas and environmental governance, including his dedication to initiating the formation of the Komunitas Peduli Ciliwung (KPC) in 2008 to safeguard the river’s ecology from upstream to downstream.

Currently, Harkuk is expanding his environmental efforts to the Cisadane River and actively promoting the Marine Debris campaign. By teaming up with young people and local communities along the river, this grassroots movement works to prevent waste from washing into the ocean. At its core, the initiative is about changing mindsets and educating citizens to no longer see the river as a trash bin.

Harkuk’s vision is to bridge the gap between forest and ocean conservation. While he regularly leads river treks to keep an eye on environmental issues, he also cares deeply about the community’s economic well-being. He actively promotes sustainable solutions, like integrating coastal ponds with mangrove planting to prevent coastal erosion.