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GIS Map Gallery: March 2003


3-Dimensional Perspective of Burkes Garden - Tazewell County, Virginia


3-Dimensional Perspective of Burkes Garden - Tazewell County, Virginia

The map of the month for March 2003 is Burkes Garden, Tazewell County, Virginia. In the foreground is Chestnut Ridge overlooking into the valley formed by the bowl-shaped Garden Mountain. At an elevation of 3,100 feet, Burkes Garden is often referred to as the "highest valley in Virginia". The southeastern rim of the valley, shown on the right side of the map, serves as the political boundary between Tazewell and Bland counties and is also part of the Appalachian National Scenic Trail.

The map's three-dimensional effects were produced using ESRI ArcScene software. Several data layers were used in the construction of this map. Color infrared aerial photographs, called DOQQs, were draped over elevation data. A seam, created by DOQQ images acquired at different dates or with different methods, can be seen running diagonally (north-south) through the map. Red areas represents healthy vegetation in color-infrared imagery. Elevations values were exaggerated by twice their real world values to create a more dramatic effect. The water features on this map are derived from the National Hydrography Dataset (NHD-USGS/EPA). Burkes Garden resides in the New River drainage. This drainage originates in North Carolina, flows north through Virginia, and terminates in the West Virginia.

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