Natural artwork by Marion Strunk from Germany, red thread sculpture on the Gerschnialp Land Art Trail in Engelberg 2025 On the Gerschnialp near Engelberg in the canton of Obwalden, Switzerland, there is a striking red ball of yarn. It rests on a tree stump in the middle of a dense forest. The forest floor is lush with ferns and shrubs. Appreciation of nature is the common thread running through the work of artist Marion Strunk. This work of art is part of the land art exhibition on the Gerschnialp