Winter solstice marks the shortest day of the year and is followed by the gradual return of the light. Come celebrate the end and the beginning of this cycle by walking the prairie and ash forest at the St. John's Landfill. This landscape hosts a spectacular array of song birds, waterfowl, raptors, and mammals that live along the Columbia Slough. All ages. Preregistration required. $6/person, $11/family.