Kawainui and Hamakua Marsh is the largest wetland in Hawaii. It is home to several endangered and endemic waterbirds and other creatures. Plans are in the works to build a visitor information center and walking trails. In the meantime, visitors can enjoy the marsh by parking at Kaha Park and walking along the two-mile levee that runs from the park to the Pali Highway.
Visitors can also contact Ahahui Malama I Ka Lokahi, a grassroots service organization, to find out about educational tours and service projects at the marsh.
Nearby Ulupo Heiau, a sacred site for Native Hawaiians, is also worth a visit.