It’s an accordion structure made from handmade paper embedded with straw, which you see on the back of the book really well (below).
The inside of the book has layers of encaustic medium and paint.
Embedded in the encaustics are dried leaves and the words of a poem by Mary Oliver called In Blackwater Woods.
The book is held together with some tea dyed twine.
If you live locally you can see the show at the Brighton and Faneuil Branches, Boston Public Library from November 12th, 2016 — January 28th, 2017.