Editing Earth shelter (section)

====Architectural aesthetics====
Earth sheltered dwelling express itself with the color harmony of soil and earth.<ref name="Jing 1988"/> Meanwhile, the material properties of soil and earth give earth homes the simplicity of geomatic masses. Also, earth homes blend in perfectly with the landscape and highlight the beauty of the surroundings, which is a significant basis of the [[arcology]] concept. For example, [[yaodong]] and pit cave dwellings in Northern China hide themselves underground and blend in perfectly within the Loess plateau environment. [[Salt Cathedral]] in a halite mountain near the city of Zipaquirá, Colombia hugs the contour and highlights the natural features.