In lower Kīpahulu Valley, the waters of Pīpīwai Stream course through steep, green Ōheʻo Gulch to the deep blue Pacific Ocean. On the high slopes of Haleakalā , upper Kīpahulu Valley, largely untouched by man, is ecologically intact and currently restricted to all but permitted researchers. Hawaiian cultural sites along the coastline, such as the remains of village sites and the flooded terraces that once grew the staple crop taro (also called kalo), are being revived and restored for park programs interpreting the many centuries of human habitation here. Take a walk along the coast to experience a sense of the bustling communities that once thrived here.