Heoninneung Ecological Landscape Conservation Area (Alnus japonica Forest)

Heoninneung Ecological Landscape Conservation Area is a forest where approximately 17,000 pyeong of Alnus japonica trees form a colony at the lower southern slope of Daemosan Mountain, below Heoninneung Royal Tomb. Due to groundwater flowing in from the wide basin of the southern slope of Daemosan Mountain, the water level is high, and as a lowland with deep soil, it has favorable environmental conditions, forming a large-scale Alnus japonica community rare in Seoul. Additionally, puddles and small waterways remain throughout the area where Alnus japonica grows, allowing various wetland herbaceous plants to thrive, and it is rich in biodiversity, with Seoul-protected species such as the white-backed woodpecker, swallow, black-naped oriole, and great tit inhabiting the area. Various wetland plants such as Alnus japonica forest, yellow jewelweed, Solomon's seal, and iris live here, and wooden decks have been installed for easy walking, allowing visitors to easily observe wetland plants. Once designated as an ecological landscape conservation area, all activities harmful to ecosystem conservation, such as capturing wild animals and plants or collecting soil and stones, are prohibited within the area.