Ключевые слова: 3d, abstract, altitude, analysis, art, black, cartography, cgi, computer, contour, data, design, digital, earth, elevation, environment, form, generated, geography, geology, geospatial, gradient, graphic, hill, landscape, lines, map, model, monochrome, mountain, nature, pattern, peak, range, relief, rendering, representation, science, shape, slope, surface, surveying, technology, terrain, texture, topographic, topography, undulation, valley, visualization,