Karangbolong beach is a sandy beach that is wide enough lye, which is bounded by hills composed by clastic sedimentary-volcanic origin. Gray sand-sized smooth rocks derived from the rough. A wash of the waves that hit the wall of hills produce enough energy to erode, transport and the precipitate re-granules of rock. High degree of weathering in the region to accelerate the abrasion process. Local, lava breccia outcrops are located on the beach experienced erosion, resulting in the formation of a unique abrasion.
Karangbolong coast has the potential to form a strong reverse flow, so it is a dangerous area for swimming. Other activities that tourists can do is fishing, in which some reef fish species is relatively abundant on this beach.
In coastal areas there are also cave Karangbolong, located on the east side. A long hallway is formed on the terkekarkan lava breccia layer. Karangbolong cave a length of 30 m, width 10 m and a height of about 5 m. Breccia, known as the Gabon Formation Oligo-Miocene age is between 30-15 million years or last, unfold together with inserts sandstone and clay.
The cave formation is influenced by peruntuhan Karangbolong occurring along the border areas between breccias with rock or stone pasri clay. Peruntuhan hole will be even greater because the layer of rock that hangs over the roof holes always collapse under the weight. The process is also triggered by the burly-burly that is, whose presence weakens the tie between the components of rocks. The process of cave formation is observed both in the far east and south Goa Karangbolong, where on a small scale peruntuhan rocks occur along the boundary of different layers. Because instead of limestone caves, then in Goa Karangbolong found no ornaments.
(SOURCE)
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