In the geologic time scale, the Meghalayan is the latest age or uppermost stage of the Quaternary.[3] It is also the upper, or latest, of three subdivisions of the Holocene epoch or series.[4][5] Its Global Boundary Stratotype Section and Point (GSSP) is a Krem Mawmluh Cave formation in Meghalaya, northeast India.[6] Mawmluh cave is one of the longest and deepest caves in India, and conditions here were suitable for preserving chemical signs of the transition in ages.[7] The global auxiliary stratotype is an ice core from Mount Logan in Canada.[8]