Wai'anapanapa Black Sand Beach
This volcanic black sand beach is in East Maui, Hawaii just off the road to Hana. It's unique because it's the only black sand beach on Maui that's actually created by lava flow. If you're making the drive I say this is a must see. It was very crowded when we passed through but I was lucky enough to snap a shot of the beach with only two people on it (that I had to clone out). But by the time I made my way down to the beach itself there must have been 30 or more people there. There are caves around this area too which make for good exploring (actually there is one directly beneath me in this shot).