Most people back-track up Hana Highway after visiting the Pools of Ohe’o, but I suggest continuing on Route 31 for a road trip along the backside of Haleakala (allow 2-3 hours). Around mile marker 39, the road narrows and becomes bumpy for about 10 miles. It becomes smooth again near Kaupo where you can grab drinks and a popsicle from the historic Kaupo Store. Savor the rugged, windswept scenery of the beaches and volcano at lookout and pullout points. This part of the island is a beautiful area to witness sunset.