Earth Art of Nash and Hanson--

David Nash and Mikael Hanson both work with natural materials and conform them into artificial forms that exist in aesthetic ambiguity between organic and composite realms. Nash considers his work a form of recycling as he only selects materials (such as trees) slated for demolition or destruction. Hanson works with land art in a variety of forms, from interior displays to outdoor interactive installations. His work is centered above while the work of Nash is arrayed above and below it. (Source)