Tombs inside Gomantong caves. 100 km. Sandakan Gomantong Caves, located on limestone hills around the lower Kinabatangan, made famous by the amount of edible nests, made from the saliva of the birds housed there. These nests are known for their medicinal properties between the local Chinese community and are harvested rattan and bamboo instruments, arranging them on a ladder hanging over 30 m. above the cave floor. After collection, between February and April and between July and September, "the nests are submerged in water to remove mud and feathers, leaving them clean. Then sold to the local Chinese community and are exported to many parts of the world: up to $ 2000 per kilo have come to pay. The collection is tightly controlled by a licensing system. The former capital of Sabah, Sandakan, is an important port for the export of varied and numerous products, from timber and palm oil, to birds' nests for the famous Chinese delicacy. From here you can travel Gomantong Caves, setting out nest eggs, considered a delicacy. Be sure to approach the Sepilok Orangutan Sanctuary, which lies about 24 kilometers from Sandakan. It is the only place on earth where you can see, from a platform located in the forest, how they are fed. It is an orangutan shelter, where they were later rehabilitated to return to their natural environment. It is advisable to visit during the morning. These caves, located on limestone hills around the lower Kinabatangan, made famous by the quantity of edible birds nests that house. These nests are known for their medicinal properties between the local Chinese community, and are harvested rattan and bamboo instruments, arranging them on a ladder hanging over 30 m. above the cave floor.