The coolness. The darkness. The silence. And perhaps most of all, the mystery, are what attrracts us to caves. Due to its geology, in particular the karstic formations, Langkawi has an abundance of caves, both landform, some connected to the sea or lake, and some only accessible by boat. Here you will find hundreds, perhaps thousands of several species of bats, roosting high in the chamber tops. Some caves were subterranean streams millennia ago, or part of a primordial seabed. Many are rich in ancient oysters and barnacles encrusted on the walls. And one or two even contain archeological artifacts, cave paintings, and mysterious human markings that have yet to be deciphered.
Gua Pinang is the remains of an ancient sea cave formed by waves when the sea was 25m above its current level. There are ancient beds of seashells, and long winding cave tunnels where oyster shells can be found in Bukit Pinang before reaching the mouth of Gua Pinang— evidence that sea levels dropped, and which occurred about 1,000 years ago.
Gua Wang Buloh
This cave formed about 150m above the present sea level and has several small entrances facing a valley, which is a doline or collapsed cave. It has a very steep cliff, and appears green due to the growth of algae. The cave has several chambers at two different levels, with various stalactites, stalagmites, columns of rock curtain and flowstones forming shapes resembling creatures appearing on the one billion year-old trondhjemite granite on Pulau Tepor. There are also other features found within the formation as seen in Sungai Itau and Batu Asah, where one can find brachiopod fossils indicative of cold water temperatures of the Gondwanaland seas.
Located near a tributary in the heart of Kilim mangrove swamps within the Kisap Forest Reserve, the cave is named after the thousands of insect-eating bats clinging to the ceiling of its main chamber. The cave is 60m in length and has two separate caves to explore.
Within the cave there are many interesting features and structures commonly found in a tropical cave, including stalactites, stalagmites, flowstones and other formations. However there are old oyster shells encrusted onto the cave walls, which have been dated to be about 5,000 years old, suggesting that sea levels within the region have lowered within that time.
Gua Pasir Dagang
Gua Pasir Dayang is located near the boundary between the Chuping Formation and a granitic intrusion causing the rock to metamorphose to marble. The mouth of the cave is quite narrow and a small stream runs through it depositing fine sand layers. The cave is small but the stalactites and flowstones within produce a fantastic world of illusion and imagination.