Gua Tempurung is a cave in Gopeng, Perak, Malaysia. It is popular among spelunkers, or caving enthusiasts. About 3 km long, it is one of the longest caves

in Peninsula Malaysia. Part of it has been developed as a show cave with electric lighting and walkways and there are a range of tours of different lengths

and difficulty. A fine river cave, the river passage runs about 1.6 km through the hill. There are three very large chambers and some spectacular stalactites

and stalagmites.

Located in Gopeng, about 24km south of the capital city of Ipoh in Perak, this limestone cave is one of the largest in Peninsular Malaysia. Although not as

big as Niah Cave and Mulu Cave in Sarawak, beginners to caving exploration will be glad to know that this cave is easy to explore. The tunnel of the cave

runs from the east to the west covering a distance of about 2km under the limestone hills known as Gunung Tempurung and Gunung Gajah. It is made up

of 5 large domes and is believed to have existed since 8,000 B.C., about 10,000 years ago. 
http://www.ipoh-city.com/attraction/Gua_Tempurung/