Introduction: Loom Analysis has been around for a long time and has various uses. Some examples of uses are cell tower locations, construction site locations, real estate values, and archaeology. Two main types of visibility models used are line of sight and reduced visibility. Line-of-sight profiles model point-to-point visibility, while viewpoints model point-to-area visibility. (Analysis and Visualization of Visibility Surfaces, 2003) Visibility surface analysis is used to calculate which locations in a digital elevation model (DEM) can be connected by an unbroken straight line to a viewpoint location within any distance specified. (Llobera, 2003) The use of multiple points of view and their combination to create a cumulative point of view is commonly used. A vision in which the focus of the analysis is on understanding the relationship between isolated points and where the concern for the space in between is lost and considered meaningless and inert. (Llobera, 2003) Cumulative viewpoints can be used to identify where the visual presence of features may be greatest. (Llobera, 2003) My idea was to determine the visibility of the development of the slopes by observing them from the valley floor and compare the hills on the east side and the west side. By using small cumulative viewing spaces I can try to determine where the visual presence of the houses can be greatest. The “viewshed” model in Idrisi creates a 360-degree arc around the point or viewpoint area and calculates which cells of the surface image are visible within the specified distance. Creating a continuous view of the affected area would be time-prohibitive and impractical for the purpose of this project. Data and Sources: Tax parcels, zoning, and vegetation shapefiles are from RLIS data and the Oregon10m DEM N from......middle of the document. .....of underdeveloped areas. I gained a better understanding of the spaces and their complexity and a better knowledge of the Irdisi processes. Error occurred: The reclassification sum files came out the same for trees and no trees, which gave me the same results and I had to go back and redo the analysis. I gained a better understanding of the points of view and their complexity and a better knowledge of Irdisi processes. Bibliography Analysis and Visualization of Visibility Surfaces. Caldwell, D.R., et al. 2003. 2003.Joly, Daniel, et al. 2009. A quantitative approach to visual landscape assessment. Annals of the Association of American Geographers. 2009, vol. 99, 2, pp. 292–308.Llobera, M. 2003. Extending GIS-based visual analytics: the concept of visual landscapes. International Journal of Geographic Information Science. 2003, vol. 17, 1, pp. 25-48.