Waipi‘o (or Waipio) Valley is named after the river that runs through the valley (wai-piʻo means curved water in the Hawaiian language) and is about one mile wide and six miles deep. Towards the back the valley splits into many ‘fingers’, each one with its own waterfall.

"the entire back of the valley and Hi'ilawe Falls are either private property or require you to cross private property. Despite what you've heard, the roads leading to the back of the valley are not public rights-of-way."