Yakusugi refers to ancient cedar trees found on Yakushima, a UNESCO World Heritage site in Japan. These trees are known for their impressive age, with some estimated to be over 1,000 years old. The unique climate of Yakushima, characterized by high rainfall and humidity, contributes to the growth of these magnificent trees. The Yakusugi trees are not only significant for their age but also for their ecological importance. They provide habitat for various species and play a crucial role in the island's ecosystem. The preservation of Yakusugi is vital for maintaining the natural heritage and biodiversity of Yakushima.