Exploring the woods inevitably involves detritus - a broken branch decaying on the ground, leaves slowly turning to dust, pine cones gone to seed. Perhaps you’ve stumbled across a behemoth of a once-tree, felled by lightning or creeping, internal rot.

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In Seattle’s Olympic Sculpture Park , you’ll find sculptures by modern masters like Claes Oldenburg and Richard Serra, but you’ll also find another more unusual work of art: a rotting tree. It’s slowly rotting, in a controlled environment called the Nekoum Vivarium. (Vivarium means “a place of life” in Latin.)

The tree in the sculpture park is not entirely sculpture nor nature but is perhaps a mixture of both - natural decay under the careful gaze of the artist. This Western Hemlock lived its life in the Green River Watershed and was brought, with permission of the State, to the Olympic Sculpture Park in 2006. This vivarium was the vision of artist-cum-arborist Mark Dion. As he puts it:

“In some ways, this project is an abomination. We’re taking a tree that is an ecosystem—a dead tree, but a living system—and we are re-contextualizing it and taking it to another site. We’re putting it in a sort of Sleeping Beauty coffin, a greenhouse we’re building around it. And we’re pumping it up with a life support system — an incredibly complex system of air, humidity, water, and soil enhancement — to keep it going. All those things are substituting what nature does—emphasizing how, once that’s gone, it’s incredibly difficult, expensive, and technological to approximate that system—to take this tree and to build the next generation of forests on it. So this piece is in some way perverse. It shows that, despite all of our technology and money, when we destroy a natural system it’s virtually impossible to get it back. In a sense, we’re building a failure.”

The display includes magnifying glasses to examine the rot and a chalkboard for lessons on trees. The room is open whenever a volunteer staffer is there.

The vivarium is in a 9-acre park on Seattle’s waterfront, adjacent to Myrtle Edwards Park.