There are two fantastic options for hiking the Big Tree Botanical Area Interpretive Trail, with trailheads located both near the historic Guard Station at Lost Lake Campground and another dedicated trailhead on Forest Road 33.
The longer version of the hike, for those starting at the campground, totals 2.3 miles roundtrip. This option consists of a wide trailbed that may be considered wheelchair-friendly without being fully ADA-compliant, as it includes a steeper section and some switchbacks close to the campground, passes through a gate and, additionally, crosses a road in two locations. To do this hike, park in the day-use area near the historic Lost Lake Guard Station. (It’s worth noting that Lost Lake’s facilities were constructed by the Civilian Conservation Corps in the 1930s and the entire area reflects the craftsmanship of the CCC era.)
To avoid on-trail switchbacks, start at the dedicated trailhead on Forest Road 33, which includes an accessible outhouse and several parking spots, and also shortens the hike to 0.7 mile on a lollipop loop to the big trees.
The main attraction for this hike is the two 900-year-old western larch trees, remnants of a forest that was logged in 1963.
Nearby Lost Lake has both a free day-use area and a lovely (fee) campground, in addition to being a good starting location for this hike. The lake is open for nonmotorized paddling, has a swimming beach and is prime loon habitat, so be sure to listen for loons calling when in the area! There is also a natural amphitheater with an added stage and seating area located a short walk north from the campground loop, occasionally hosting programs from the youth camp nearby, but also a lovely place to stage one’s own evening entertainment.