The press release explains "Meg Webster’s work finds inspiration in the intrinsic beauty of natural materials. Using metal, glass and organic elements like salt, soil, twigs and moss, the artist creates large-scale installations and precise structures rooted in the traditions of Land Art of the 1970s." ( release)
Above you can see "Mother Mound Salt" (2016, salt, approximately 42 inches high x 9 1/2 feet in diameter (106.6 x 289.5 cm.)
The girl is inspecting "Volume for Lying Flat" (2016, peat moss, green moss, soil, 25 x 59 x 81 1/2 in. (55.9 x 149.9 x 207 cm).