The area of Menghuan Pond--one of the few wetland environments in Yangmingshan--is only about0.3 hectares.
Menghuan Pond is a swamp.Due to the year-round mists,the area has a dreamlike quality about it. For this reason it's called Menguan Pond,"Menguan"means fantasy in Chinese. There are many swamp
plants here,the most valued being Taiwan Quillwort. In order to protect this national treasure,Menghuan Pond was declared an ecological protected area.