Mount Thullier

Mount Thullier, also known as Mount Thuillier, is a mountain on Great Nicobar Island, located in the Indian Ocean and bordering on the Andaman Sea. At above sea level, it is the highest point on the island and in the Nicobar Islands.

Etymology

Mount Thullier is likely named after British colonial officer Henry Edward Landor Thuillier who was Survey General of India from 1861 to 1878.

Geology

The mountain is composed of parallel ridges of folded turbidite sandstone. The hill is thought to have arisen due to tectonic activity in the region.

Topography

The island's five perennial rivers – Alexandra River, Jubilee, Amrit Kaur River, Dogmar River, and Galathea River – all originate from Mount Thullier. The Galathea River is the longest, flowing southwards for about 30 km to empty into the sea at Galathea Bay near the southern tip of the island.