Deep in the park is the Moxlie Creek Springs Basin, one of the largest spring basins in the region. Beneath the towering, temperate rain forest canopy, the spring branches braid through the skunk cabbages and salmonberries to create Moxlie Creek. The park's trail system, although steep and stepped in locations, provides one of the City's best walking experiences. Parking for the one and a half-mile long, G. Eldon Marshall trail, is on Henderson Boulevard near Interstate 5. The park's trail system can also be accessed from pedestrian entrances on Eastside Street and 22nd Avenue.