Ключевые слова: abstract, abstract landscape, background, cave, color, colorful geology, curve, dark, detail, detailed geology, earth, earth tones, erosion, erosion effect, formation, geological formation, geology, grunge, grunge surface, landscape, layered formation, layers, mineral, mineral texture, natural, natural pattern, pattern, rock, rock layers, rough, rough terrain, sediment, sedimentary cave, stone, stone background, surface, texture, textured surface, wave, wavelike curves,