Reasonable suspicion is defined by a set of factual circumstances that would lead a reasonable police officer to believe criminal activity is occurring. This is different from the probable cause (what a reasonable person would believe) required for an arrest, search, and seizure.
Black Sand Beaches. Black sand at Kalapana. This new black sand beach is forming after the old one was swept away by a lava flow in 1986. The sand on all black sand beaches on Hawaii is made out of tiny fragments of lava. In contrast to the green and white sand, most of the black sand is created almost instantaneously. When hot lava enters the water it cools down so suddenly that it solidifies, and shatters into large amounts of black sand.
The easiest black sand beach to get to on the Big Island is Punalu'u Beach. Punalu'u is on the east side of the southern tip of the Big Island. It is easily accessible from Highway 11 between mile markers 55 and 56.