While Heather and I were on the island of Maui over the Christmas holidays, we did an amazing hike through Haleakala crater. The following are a few photos from the hike (click through on each one for a larger version).
I'd highly recommend this hike to anyone visiting Maui who wants an experience outside of the usual beach and surf scene. The scenery is unlike anything else you'll see on the island, and it really gets you away from the crowds. Make sure to pack warm clothes and lots of water and food. We did the 18.5 km hike in a little bit over four hours, but you might want to plan on taking a bit more time than that. The National Parks Service has a great page of information and maps for the area here.
Check out a few of my other blog posts about Hawaii:
The Garden Isle and The Valley Isle