Question: K12 and Rimo I, are both which type of natural land elevation?
Context: Aggradation (or alluviation) is the term used in geology for the increase in land elevation, typically in a river system, due to the deposition of sediment.  Aggradation occurs in areas in which the supply of sediment is greater than the amount of material that the system is able to transport.  The mass balance between sediment being transported and sediment in the bed is described by the Exner equation. Monte Nuovo ("New Mountain") is a cinder cone volcano within the Campi Flegrei caldera, near Naples, southern Italy.  A series of damaging earthquakes and changes in land elevation preceded its only eruption, during the most recent part of the Holocene, which lasted from September 29 to October 6, 1538, when it was formed. Hypsometry (from Greek ὕψος, "hupsos", "height" and μέτρον, "metron", "measure") is the measurement of land elevation relative to sea level.  Bathymetry is the underwater equivalent.  A hypsometer is an instrument used in hypsometry, which estimates the elevation by boiling water – water boils at different temperatures depending on the air pressure, and thus altitude. The Jordan Rift Valley (Hebrew: בִּקְעָת הַיַרְדֵּן‎ Bik'at HaYarden, Arabic: الغور‎ ‎ Al-Ghor or Al-Ghawr ), also called the Syro-African Depression, is an elongated depression located in modern-day Israel, Jordan, and Palestine.  This geographic region includes the entire length of the Jordan River – from its sources, through the Hula Valley, the Korazim block, the Sea of Galilee, the (Lower) Jordan Valley, all the way to the Dead Sea, the lowest land elevation on Earth – and then continues through the Arabah depression, the Gulf of Aqaba whose shorelines it incorporates, until finally reaching the Red Sea proper at the Straits of Tiran. Schmeeckle Reserve is a 280 acre natural land area located on the University of Wisconsin–Stevens Point, in Stevens Point, Wisconsin, United States.  It contains hiking trails, natural land area, a visitor center, multiple habitats, abundant wildlife and a manmade lake.  "The Reserve was created to protect and restore native ecological communities, serve as an outdoor classroom for students and teachers, and provide recreational opportunities to all visitors." Environmentally, Colombia is a mega-diverse country from its natural land terrain to its biological wildlife.  Its biodiversity is a result of its geographical location and elevation.  It is the fourth largest South American country and only country in South America to have coasts in the Pacific and Caribbean ocean.  Colombia’s terrain can be divided into six main natural zones: The Caribbean, the Pacific (including Choco’s Biogeographic rainforest), The Orinoco region, The Amazonia region, the Andean region, and the Insular region.  52.2% of the environment is predominately the Andes, Amazon, and Pacific Basins, followed by the Orinoco basin 13.9%, the Andes and the Caribbean.  The Tropical Andes, Choco, and the Caribbean are considered biodiversity hotspots which puts these areas at high risk of concentration of colonizing activities.  Colombia hosts over 1800 species and at least one new species is detected every year.  Decades of civil war and political unrest has impeded biological and environmental research in Colombia.  The political unrest in Colombia catalyzes the alteration of land patterns through the cultivation of coca and opium crops, the redirection of extractive activities, and land abandonment in some areas. ICESat-2 (Ice, Cloud, and land Elevation Satellite 2), part of NASA's Earth Observing System, is a planned satellite mission for measuring ice sheet elevation, sea ice freeboard as well as land topography and vegetation characteristics.  ICESat-2 is a planned follow-on to the ICESat mission.  It will be launched in 2018 from Vandenberg Air Force Base in California into a near-circular, near-polar orbit with an altitude of approximately 496 km.  It is being designed to operate for 3 years, and will carry enough propellant for 7 years. ICESat (Ice, Cloud, and land Elevation Satellite), part of NASA's Earth Observing System, was a satellite mission for measuring ice sheet mass balance, cloud and aerosol heights, as well as land topography and vegetation characteristics.  ICESat was launched 13 January 2003 on a Delta II rocket from Vandenberg Air Force Base in California into a near-circular, near-polar orbit with an altitude of approximately 600 km.  It operated for seven years before being retired in February 2010, after its scientific payload shut down and scientists were unable to restart it. Rimo I is the main summit of the Rimo massif with an elevation of 7385 m .  It lies in the northern part of the remote Rimo Muztagh, a subrange of the Karakoram range.  It is located about 20 km northeast of the snout of the Siachen Glacier and is the world's 71st highest mountain.  "Rimo" means "striped mountain".  The Rimo Glacier, originating here, drains to the Shyok river. Surveyed as K12, this mountain is in the Saltoro Muztagh which is a subrange of the Karakoram range in the Siachen region, near Jammu and Kashmir.  It lies near the Line of Control.  Its name comes from its designation given during the original survey of the Karakoram range.
Answer: mountain