Daryl from Nelson Treehouse stepped onto the grounds of Wolf Haven Sanctuary outside Tenino, Washington, and looked up into a cluster of Douglas firs where, within months, students would be standing 30 feet off the ground watching grey wolves move through restored Mima Mound prairie below. The stakes are real: Wolf Haven cares for 53 animals across two sites, runs entirely on private donations, and currently asks visiting school groups to do their learning in a staff break room. That is about to change. The crew from Nelson Treehouse is here to build something better: a fully ADA-accessible treehouse classroom that puts kids face-to-face with one of North America’s most misunderstood predators.
A sanctuary that has been doing this since 1982
Wolf Haven was founded in 1982 with a mission to conserve wolves and their habitat through three pillars: sanctuary care, education, and conservation. At the Tenino headquarters, 42 animals live in enclosures that range from a quarter of an acre to close to a full acre, most of them wolves and wolf dogs rescued from the black market pet trade. Another 11 animals are cared for at a Montana site. Among the Tenino residents are Mexican wolves and American red wolves, some of whom are candidates for release into the wild as part of federal reintroduction programs.
The education side draws thousands of K-12 students from as far south as Portland and as far north as Seattle, all traveling the I-5 corridor to visit. Weekend educational visits are run entirely by roughly 75 active volunteers, and Wolf Haven accepts no federal or state funding for its animal care, relying almost completely on public generosity. In 2024, the sanctuary was selected from more than 200 sanctuaries worldwide to receive the Outstanding Sanctuary Award from the Global Federation of Animal Sanctuaries.
What 250 feet of ramp and a treetop deck actually means for a kid in a wheelchair
The build Daryl walked through on-site starts where two Douglas firs anchor the base of a ramp system. The structure climbs roughly 30 feet through a tower at the first landing, continues through a second tower with a slight V-shaped section for extra platform space, and finally sweeps under the canopy of an oak before landing at a main deck. The full ramp run is 250 feet and built to ADA standards, meaning students who use wheelchairs roll directly onto the treehouse without a separate path or a workaround.
From that deck, visitors will look directly into the wolf enclosure where Sierra, a 100% grey wolf, lives alongside her companion Mesa, a high-content wolf dog. A Wolf Haven staff member pointed out that keeping wolves in companion pairs is standard practice at the sanctuary: ‘They’re social animals, they like to be together,’ she explained, noting that companionship supports both health and enrichment. Interpretive signage will line the ramp on the way up, turning the climb itself into a guided lesson in wolf ecology and responsible wildlife viewing.
A parallel 2027 project will expand the perimeter fence and build a new large enclosure close to an acre in size, adding space for two more animals. That enclosure will sit directly in the sightline from the treehouse deck, giving future student groups a view of two companion pairs simultaneously.
One Wolf Haven educator framed the full scope plainly: ‘We’re going to be able to open up a million-dollar treehouse classroom space to students and kids who would otherwise never have access to this type of classroom infrastructure.’
Mesa at the fence line
Mesa, the high-content wolf dog who shares an enclosure with Sierra, was visible from the one wolf enclosure currently seen from outside the sanctuary boundary. His companion Sierra stayed further back in the natural-habitat enclosure, where decades of resident wolves have built intricate den systems inside the root structures of mature Douglas firs.
When the treehouse is complete, those same firs will hold the platform where the next generation of students stands and looks down at animals like Mesa and Sierra, learning something the staff break room could never quite teach them.
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