National Geological Monuments of India
National Geological Monuments are geographical areas of national importance and heritage, as notified by the Government of India's Geological Survey of India, for their maintenance, protection, promotion and enhancement of geotourism.
List of National Geological Monuments
There are 34 notified National Geological Heritage Monument Sites of India. GSI or the respective State governments are responsible for taking necessary measures to protect these sites.Geo-tourism sites in Northeast India
There are 12 geo-tourism sites in Northeast India notified by the Geological Survey of India for promotion of geo-tourism.| No. | Image | Geo-Heritage site | Location | District | State | Geotourism Category and reference |
| 1 | Mawmluh Cave | Cherrapunji | East Khasi Hills district | Meghalaya | Geo-tourism: Cave belongs to Meghalayan Age, which is a major abrupt climatic event with critical drought and cooling 4,200 years ago which was determined from a stalagmite from Mawmluh cave. In the geologic time scale, the Meghalayan is the latest age or uppermost stage of the Quaternary. | |
| 2 | Mawblei God’s Rock | East Khasi Hills district | Meghalaya | Geo-tourism: A megalith, Mahadek sandstone of Khasi group of cretaceous period, inclined at 45 degrees on a slope of a hill of Wahrashi River valley is a sacred site for Khasi people. | ||
| 3 | Therriaghat | East Khasi Hills district | Meghalaya | Geo-tourism: Best-preserved and most complete Cretaceous-Paleogene boundary in India. Cretaceous–Paleogene extinction event at the end of the Cretaceous period caused sudden extinction of the large vertebrates, plankton and many tropical invertebrates. | ||
| 4 | Majuli | Majuli island | Majuli district | Assam | Geo-tourism: World's largest river island in Brahmaputra river has sacred Hindu Vaishnavite sampradaya's satra set up by in 15th-16th century Srimanta Sankaradeva. The eco-region is conserved by the Srimanta Sankaradeva Sangha. | |
| 5 | Umananda Island | Brahmaputra river | Guwahati | Assam | Geo-tourism: islet is an inselberg made of rocks of Assam-Meghalaya gneissic complex. | |
| 6 | Chabimura | Gomati district | Tripura | Geo-tourism: 15th-16th century sacred Hindu site with rock carvings on a cliff of Gomti River with massive rock cut images of Shiva, Vishnu, Karthikeya, Durga and other Hindu deities highest of which is 20 ft. | ||
| 7 | Unakoti | Unakoti district | Tripura | Geo-tourism: 7th-9th centuries rock-cut sculptures and Shaiva temples. Unakotiswara Kal Bhairava shiva statue is 30 feet tall. | ||
| 8 | Sangetsar Tso | Tawang district | Arunachal Pradesh | Geo-tourism: Also called as Madhuri Lake, created by damming of river due to earthquake in 1950, is nestled in a lush valley midst of snowy mountain peaks and freezes in winter. | ||
| 9 | Loktak Lake | Bishnupur district | Manipur | Geo-tourism: It is a phumdi with phumsangs which is also the Keibul Lamjao National Park - world's only floating wildlife habitat on the southwestern part of lake. | ||
| 10 | Reiek Tlang | Aizawl | Mizoram | Geo-tourism: It is a cuesta created by erosion of the tertiary sand shale alterations. | ||
| 11 | Nagahill Ophiolite Site | Pungro | Kiphire district | Nagaland | Geo-tourism: | |
| 12 | Mamley Stromatolite Park | Namchi | South Sikkim district | Sikkim | Geo-tourism: Also called "Buxa Formation of Mamley", is Algal mat#StromatolitesStromatolite Algal mat with circular structures in the limestone of Proterozoic Buxa Formation microbiota microfossils of Ranjit Window is rare examples of early life on Earth in the Sikkim Himalayas. |