Landforms and terrestrial features

Menorca

Menorca (Catalan: Menorca), second largest Balearic Island in the western Mediterranean, Spain. Known for Talayotic Menorca, UNESCO World Heritage since 2023 with cyclopean monuments from 1600 BCE to 123 BCE, and for being an entire-island UNESCO Biosphere Reserve since 1993.

Mer de Glace

Mer de Glace, largest glacier of the French Alps in the Mont Blanc massif above Chamonix; about 30 km2 and 11 km long, reached by the 1909 Montenvers train, with a famous annually re-excavated ice cave and rapid modern retreat.

Merbabu

Merbabu (Gunung Merbabu), also historically Gunung Damalung or Pam(a)rihan, is a dormant 3,118 m stratovolcano in Central Java north of Merapi, last erupting in 1797 CE (VEI 2), with a national park on its forested, savanna-dotted flanks.

Meride Formation (fossil, Switzerland)

Meride Formation (Calcare di Meride), 400–600 m Ladinian limestone at Monte San Giorgio, Italy/Switzerland, with five fossiliferous beds (Cava inferiore, Cava superiore, Cassina, Sceltrich, Kalkschieferzone) yielding Triassic marine reptiles and fish.

Merritt Island, Florida

Merritt Island, Florida: unincorporated Brevard County CDP between the Indian and Banana rivers, population 34,518 (2020), home to Kennedy Space Center and the Merritt Island National Wildlife Refuge on its northern portion.

Meru

Meru (Mount Meru), active stratovolcano in northern Tanzania's East African Rift near Arusha; 4,550-4,566 m, second highest in Tanzania; last erupted 1910 from Ash Cone; breached caldera and Momella debris avalanche about 7,800 years ago.

Meru Peak

Meru Peak is a three-summit massif above the Gangotri Glacier in Garhwal, Uttarakhand, India (Meru South 6,660 m, Central 6,310 m, North ~6,450 m), famed for the Shark's Fin big wall first climbed by Anker, Chin, and Ozturk in 2011.

Mesa

Mesa (Spanish for table): an isolated, flat-topped, steep-sided erosional landform smaller than a plateau, capped by resistant caprock; distinguished from a butte by width exceeding height.

Meta Incognita Peninsula

Meta Incognita Peninsula (Мета-Инкогнита) is a peninsula on southern Baffin Island, Nunavut, Canada, at 62°45'N/68°30'W, named by Elizabeth I after Frobisher's 1576-1578 voyages and underlain by Paleoproterozoic Lake Harbour Group rocks.

Meteor Crater

Meteor Crater, or Barringer Crater, in northern Arizona is a 1.2 km-wide, 180 m-deep impact crater formed about 50,000 years ago by a 30 m iron-nickel meteorite, the first impact crater recognized on Earth.

Meteora (Μετέωρα)

Meteora (Μετέωρα), Greek Orthodox monastery complex on sandstone pinnacles over 400 m high near Kalambaka, Thessaly; settled by hermits from the 11th century, 24 monasteries by 1500, six active, UNESCO mixed World Heritage site since 1988.

Metohija

Metohija (Albanian Dukagjin, Rrafshi i Dukagjinit) is the large southwestern basin and plain of Kosovo, drained by the White Drin, fertile and rainy (900–1,100 mm), the agricultural west of the territory.

Mex Island

Mex Island is a small island in Aleutians West Census Area, Alaska, near Amchitka in the Rat Islands, at 51.47232° N, 179.02916° E, elevation 19 m; it appears on maps of the Amchitka underground nuclear test monitoring network.

Mexican Plateau

The Mexican Plateau (Altiplano Mexicano) is a high interior plateau of northern and central Mexico, continuing northward into the Basin and Range region of the United States.

Miami Valley

Miami Valley: valley of the Great Miami River and tributaries (Little Miami, Mad, Stillwater) in southwest Ohio around Dayton; glacial buried-valley aquifer, 1913 flood, Miami Conservancy District dams.

Michinmahuida

Michinmahuida, also spelled Minchinmávida, is a glacier-covered stratovolcano in the Palena province of southern Chile, about 17 km east of Chaitén volcano, with its last confirmed eruption in 1835.

Midagahara

Midagahara (弥陀ヶ原), also called Tateyama volcano, is an active 2,621 m andesitic-dacitic stratovolcano in Toyama, Japan, with phreatic eruptions (last 1839), active Jigokudani fumaroles, and Ramsar-listed alpine wetlands.

Middle Andaman

Middle Andaman Island, one of the Great Andaman islands in India's Andaman and Nicobar territory, North and Middle Andaman district; 1535.5 sq km, 62,414 people (2011), seismic zone V, separated by Austen and Homfray's Straits.

Miers Bluff

Miers Bluff (Punta Elefante, Mirounga Point) is a 400 m bluff at the southwest tip of Hurd Peninsula, Livingston Island, South Shetland Islands, marking the northwest entrance to False Bay and lending its name to the Miers Bluff Formation.

Mig La

Mig La (Mig Pass) is a high pass in Ladakh's Changthang Plateau, India, crossed by the BRO's Likaru–Mig La–Fukche road, completed October 2025 and claimed at 19,400 ft (5,913 m) as the world's highest motorable road, surpassing Umling La.

Mikhaylov Island

Mikhaylov Island, a small Antarctic island in East Antarctica plotted near 66°48'S 85°30'E, with an ice cap climate from -34 to -8°C; named for Pavel Mikhaylov, artist of the Bellingshausen expedition, and distinct from Mikhaylov Point and Cape Mikhaylov.

Mill Island (island, Antarctica)

Mill Island, Antarctica: domed ice island 48 km long, 30 km wide, about 38 km north of the Bunger Hills on Knox Coast at the Shackleton Ice Shelf calving front; discovered February 1936 by the William Scoresby Expedition, named for Antarctic historian Dr H.R. Mill; site of a 120 m ice core.