Gua Tempurung, located 25km south of Ipoh near Gopeng, is probably the largest cave in Peninsula Malaysia and has plenty to attract the serious caving enthusiast, the adventure seeker or just the casual visitor.The total length of the cave is 4.5km although the part accessible to the public is about 1.9km and contains an underground river of 1.6km in length. The cave is home to bats especially during the mating season from March to May. Their droppings have created bat guano artworks on some the dome ceilings.