Question: The Missouri Rhineland is a geographical area located mostly in a valley that is how long?

Context paragraphs:
Stone Hill Winery: Stone Hill Winery is a Missouri winery located in Hermann, Missouri, along the Missouri River, in what is called the Missouri Rhineland of the Hermann AVA.  Established by German immigrants in 1847, it is the largest winery in the state.

Ingria: Historical Ingria (Finnish: "Inkeri" or "Inkerinmaa "; Russian: Ингрия , "Ingriya", Ижорская земля , "Izhorskaya zemlya", or Ингерманландия , "Ingermanlandiya"; Swedish: "Ingermanland" ; Estonian: "Ingeri" or "Ingerimaa ") is the geographical area located along the southern shore of the Gulf of Finland, bordered by Lake Ladoga on the Karelian Isthmus in the north and by the River Narva on the border with Estonia in the west.

Kgalagadi: Kgalagadi, meaning "Land of the thirst", is a geographical area located in Southern Africa.  It may also refer to:

Mid-Missouri: Mid-Missouri is a loosely-defined region comprising the central area of the U.S. state of Missouri.  The region's largest city is Columbia (population 100,000+).  The Missouri state capital, Jefferson City, and the University of Missouri are also located here.  The region also includes portions of the Lake of the Ozarks, the Ozark Mountains, and the Missouri Rhineland.  Mid-Missouri is centered on two contiguous metropolitan areas: the Columbia Metropolitan Area and the Jefferson City Metropolitan Area, which together have a population of over 300,000.

Missouri River Valley: The Missouri River Valley outlines the journey of the Missouri River from its headwaters where the Madison, Jefferson and Gallatin Rivers flow together in Montana to its confluence with the Mississippi River in the State of Missouri.  At 2300 mi long the valley drains one-sixth of the United States, and is the longest river valley on the North American continent.  The valley in the Missouri River basin includes river bottoms and floodplains.

All-American Canal: The All-American Canal is an 80-mile (130 km) long aqueduct, located in southeastern California.  It conveys water from the Colorado River into the Imperial Valley and to nine cities.  It is the Imperial Valley's only water source, and replaced the Alamo Canal, which was located mostly in Mexico.  The Imperial Dam, about 30 miles (48 km) northeast of Yuma, Arizona on the Colorado River, diverts water into the All-American Canal, which runs to just west of Calexico, California before its last branch heads mostly north into the Imperial Valley.  Five smaller canals branching off the All American Canal move water into the Imperial Valley.  These canal systems irrigate up to 630,000 acres (250,000 ha) of crop land and have made possible a greatly increased crop yield in this area, originally one of the driest on earth.  It is the largest irrigation canal in the world, carrying a maximum of 26,155 cubic feet per second (740.6 m/s).  Agricultural runoff from the All American Canal drains into the Salton Sea.

Missouri Rhineland: The Missouri Rhineland is a geographical area of Missouri that extends from west of St. Louis to slightly east of Jefferson City, located mostly in the Missouri River Valley on both sides of the river.  It is named for its similarities to the Rhineland region in central Europe, a wine growing area around the Rhine river and the German-Americans who determined that this part of Missouri would be good for grape growing.  The soils of the Missouri River Valley and surrounding areas are mainly rocky residual soils, which are excellent for viticulture (growing of grapes/vineyards) though poor for most agricultural purposes.  These soils were left after the carbonate (mainly limestone) bedrock weathered away to impurities of clayey soil and chert fragments.  Farther to the north, glacial deposits and wind-deposited loess, a silty soil also associated with the glaciers, are intermingled with the residual soils.

Sacred Himalayan Landscape: The Sacred Himalayan Landscape (SHL) is a trans-boundary conservation area located mostly in Nepal (73.6%) but also including land in Sikkim and Darjeeling in India (24.4%) and a small area in Bhutan (2.1%).  It links the Qomolangma National Nature Preserve in the Tibet, one of the largest protected areas in Asia, with the Kangchenjunga Landscape in India and the Bhutan Biological Conservation Complex in Bhutan.  About 22% of the area includes four of Nepal's protected areas: Langtang National Park, Sagarmatha National Park, Makalu Barun National Park, and the Kanchenjunga Conservation Area.

Bradost: Bradost or Baradust name of a Kurdish tribe, region, mountain range, river, and amirate.  the tribe inhabit a vast geographical area located in the middle of historic Kurdistan, in the region between Iraq and Iran's borders.  Sidakan District in Iraq is one of the largest areas inhabited by the Bradost clan.  In Iran, the clan inhabited Sumai Bradost, Doll (Dizadj), Berdasor, Dimdim Castle, Mergever and Tergever.  Those in the Bradost clan speak a Kurmanci dialect.  The clan formed a powerful principality around Urmia.  The Battle of DimDim in 1609 was fought between the Bradost Prince Amir Khan Lepzerin and Shah Abbas.

Hanging Wood, London: Hanging Wood was a former woodland area located in what is now southeast London, which covered a geographical area between Woolwich Common and Charlton.  Hanging Wood was a hideout for highwaymen who operated on Shooter's Hill and Blackheath.  Parts of the Hanging Wood are preserved as Maryon Wilson Park and Gilbert's Pit in the Royal Borough of Greenwich.

Supporting paragraphs: Missouri Rhineland Missouri River Valley
Answer: 2300 mi