[See more of Oahu: Things to Do | Hotels ... the back of lush Mānoa Valley, the Mānoa Falls Trail is one of the most easily accessible waterfall hikes on O'ahu for all skill levels, meaning ...

You probably won't see any dinosaurs but be prepared: The path to the falls can be quite slippery with mud, so wear sturdy hiking shoes that you don't mind getting dirty. If you're new to hiking ...