Lewis & Clark Expedition painting by by Janis Lang using soil paint. Janis took her long standing respect for the land and combined it with her love of art and painting by turning soil into a paint element and using it as the medium for her art. Along the shores of the Missouri River Corps members load supplies and expedition specimens on to their boat. Relatively large crystals of goethite give the ubiquitous yellow pigment and are found in well-drained soils. 
Learn more on the Munsell Color Blog: https://goo.gl/1wTHjE

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