First things first, this hike is short and "easy".
Yes there are stairs, yes there are handrails but you still have to be careful as you make your way up to the observation area for the needle.
(I don't think that stick figure is going to make it)
As you go up the trail, the mountains of the Iao Valley rise up all around you and also frame the land below.
As beautiful as that scene is, it is nothing compared to the cloud kissed mountains that await you as you reach the viewing hut:
(maybe there are some dinosaurs living in there)
(clouds making out with mountain tops)
Of course, what you are there to see is the Needle.
Being from Upstate New York, I have an in-built love of cold and grey and to my eye, the clouds make the mountains even better to look at.
The wind, the feeling of the clouds and the mountains, the uniqueness of this area, especially compared to the rest of Hawaii, makes this one of my favorite places and a MUST hike for you if you go to Hawaii.
Here is some info about the hike: http://www.hawaiistateparks.org/parks/maui/index.cfm?park_id=36