The Gomantong Caves are an intricate cave system inside Gomantong Hill. The hill is the largest limestone outcrop in the Lower Kinabatangan area in Sandakan.
Situated in the Sabah Parks forest reserve, the caves and the surrounding area are a proptected area for wildlife, especially orangutans. Investigation of the guano deposits were first made in 1889 by J.H. Allard for the China Borneo Company, and the caves were first mapped by P.Orolfo in 1930.
The main cave system is divided into two parts: the more accessible Simud Hiram (Black Cave) and the larger Simud Putih (White Cave) which lies above. The names refer to the main type of nests produce by swiftlets in each cave. The cave system is home to many other animals, including massive populations of cockroaches and bats. Outside one can see crested serpent, eagles, kingfishers and Asian fairy bluebirds. Access is in the form of a wooden walkway circuiting the interior.
For centuries, the caves have been renowned for the valuable edible swiftlet nests, which are harvested for bird's nest soup. The most valuable of the nests, the white ones can sell for very high prices.
The birds' nest collection is an ancient tradition, and the trading of these nests has been done since at least 500 AD. Twice a year, from February to April and July to September, locals with licenses climb to the roof of the caves, using only rattan ladders, ropes and bamboo poles, and collect the nests
The first collection takes place early in the breeding season before the swiftlets lay their eggs. The birds then make another nest in which they finally lay their eggs. After the young have fledged, the second collection is made. Care must be taken to assure that the nests are collected only after the young swiftlets have abandoned these nests. These individuals are very much in demand by the people and communities that hold the Government's harvesting licenses. Edible birds' nests are protected under the Birds' Nest Ordinance and the Forest Enactment of 1968. Heavy fines and penalties are imposed on unlicensed collectors.
Every evening, over 2 million resident bats spiral out for their evening feed. As the bats leave, the swiftlets are usually beginning to make their way back to the caves after a day's foraging. There are also bat hawks that linger not far from the scene and prey specifically on the bats as they leave their roost
Simud Hitam
Simud Hitam (Black Cave) is the more accessible of the two caves, only a few minutes' walk from the entrance, and it is open to the general public. Its ceiling can reach 90 meters high. It is the source of the less-valuable "black saliva" nests. These contain both feathers and saliva and require cleaning afterwards.
Simud Putih
Simud Putih (White Cave) is the larger of the two caves, and also the more dangerous; special permission is required to enter and one must participate in at least five hours of intense spelunking. It is where the more valuable "white saliva" nests of the swiftlets are found, and is a steep 30 minute climb further up the mountains. The main entrance is located almost 90m above Simud Hitam. (Credits to http://en.wikipedia.org/wiki/Gomantong_Caves)
Simud Hitam (Black Cave) is the more accessible of the two caves, only a few minutes' walk from the entrance, and it is open to the general public. Its ceiling can reach 90 meters high. It is the source of the less-valuable "black saliva" nests. These contain both feathers and saliva and require cleaning afterwards.
Simud Putih
Simud Putih (White Cave) is the larger of the two caves, and also the more dangerous; special permission is required to enter and one must participate in at least five hours of intense spelunking. It is where the more valuable "white saliva" nests of the swiftlets are found, and is a steep 30 minute climb further up the mountains. The main entrance is located almost 90m above Simud Hitam. (Credits to http://en.wikipedia.org/wiki/Gomantong_Caves)
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