Black rock beach. Unlike its neighbor to the east, Tahiti, Rarotonga is blessed with an abundance of nice sandy beach is a budding it’s pristine lagoon. Pictured is one of the more famous beaches on this small island, appropriately dubbed black rock beach. The contrast between the black lava rocks, the white sand, and the brilliant blue waters is a sight not to be missed. And because there are no hotels are lodgings nearby, you stand to have a good chance of experiencing this place relatively deserted. Access is easy with a public parking lot just off the main road. Exercise caution as you must clamber down the lava rocks to reach the beach but it’s pretty easily doable.