Krem Puri Cave

Krem Puri Cave is a natural sandstone cave system located near Laitsohum village in Mawsynram, East Khasi Hills District, Meghalaya. Recognized as the world's longest sandstone cave at approximately 24.5 kilometres, it was mapped and documented in 2016-2018. The cave features extensive passages, limestone formations, fossils of dinosaurs and ancient marine life, and an underground river system, making it a significant geological and adventure tourism site in Meghalaya.

Visitors can expect a remote, wild cave system in the hills near Mawsynram accessed via a trek from Laitsohum village. Inside are long sandstone passages, narrow crawl sections, large chambers, stalactites and stalagmites, fossil imprints, and seasonal streams. Exploration is only with local guides and requires wading, crawling and use of headlamps. There are no developed walkways or lighting, and the surrounding landscape is forested hills and grassland.

Systematically explored and mapped in 2016-2018 by the Meghalaya Adventurers Association with international cavers, when it was measured at 24,583 metres and declared the world's longest sandstone cave, surpassing the previous record holder Cueva del Samán in Venezuela. Fossil discoveries inside include Mosasaurus and other Cretaceous-era remains indicating ancient marine environment.

Located in the Khasi Hills, the cave lies in an area traditionally inhabited by the Khasi people. Caves (Krem) hold local cultural importance and are often associated with traditional beliefs and community stewardship, with access managed by the local village community of Laitsohum.