This free family event features a mile-long candlelit walk through the Arboretum's wintery landscape and an 80-foot lighted Norwegian Spruce Christmas tree. After the walk, warm up with hot cider and children's activities in the Jewett Interpretive Center, corner of East Nob Hill Blvd. and I-82/Hwy. 24. For information, call 509-248-7337.