Fig. 2
From: A controlled field experiment to investigate the deterioration of earthen heritage by wind and rain
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40494-019-0293-7/MediaObjects/40494_2019_293_Fig2_HTML.jpg)
Texture maps showing the surface topography after initial surface preparation and before the first set of experimental runs of a test area A, b test area B, c test area C and d the location of the test area on the test wall at Suoyang. Light blue indicates raised areas and dark blue indicates lower areas