Pulau Dayang Bunting, Pulau Tuba and islands that are located around them. There are three main geosite at Dayang Bunting Marble Geoforest Park wich are Dayang Bunting Geosite, Pulau Tuba Geosite and Pulau Ular Geosite.
These chains of islands are occupied by several rock formations including Kuah Granite (Triassic), Setul Limestone (Ordovian-Middle Devonian) and Chuping Limestone (Permian).
Like Kilim geoforest Park, the Dayang Bunting Marble Geoforest Park is also made up of karstic islands with some of its own spectacular sights. Various types of karst morphologies and landforms were formed by many different processes that took place since the Late Triassic when the area was brought up to the surface during the granite emplacement. Rugged limestone topograpgy with vertical walls and solution pipes are the main characteristics of these karstic islands. Flat or gently sloping rock surfaces are often developed at the foot of the cliff as a result of wave abrasion and is called abrasion platform. These platforms will be submerged during the high tide but not exposed during the low tide. Prolonged coastal erosion resulted in the formation of a more complex landscape comprising sea notch, sea cave, sea tunnel and sea-arch of various sizes and shapes. Pulau Dua and Pulau Lima exhibit fine examples of sea arches.