In the Malay language, cave is 'gua', with the majority being limestone and are above ground level. In the peninsula, the list features Gua Kelam in Perlis, Gua Tempurung and Kundu in Perak, scattered historic caves around Lake Kenyir in Terengganu and Gua Ikan in Kuala Krai, Kelantan. Famous caves in Sarawak include Niah and Mulu, and Fairy Cave at Bau. Gua Gomantong is the most well known cave in Sabah, where bird's nests are collected. Underwater or river caves can be found in the Kinta Valley, making up less than ten percent of local caves - and are to be avoided during rainy periods. There are also dolomite and sandstone caves scattered around the country. | 
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