The Seven Falls Hike on Oahu

[...] Seven Falls: The only reason I know about Seven Falls is thanks to four passengers on one of my flights.  These college guys were enthusiastic, fun, and outgoing, which made it easy for me to ask about their week vacation in Hawaii.  I jealously looked through the photos they snapped of some of their hiking adventures, one of which was this place.  I was told not to go unless I had someone who knew the area and had been before.  Anyone want to volunteer as my tour guide? [...]