Join a Water Resources Education Center guide to explore the twilight in and around the Columbia River and its wetlands from 7:30 to 9 p.m. July 25. Look for signs of animals, learn about plants, look for bats and identify the twilight stars and planets that appear in the early evening sky. Plan to walk 1.5 miles on paved pathways and uneven, sandy beaches. The walk is suitable for participants age 6 and older. The trail cannot accommodate strollers. Binoculars will be available to borrow during the walk. Registration is required at cityofvancouver.us/publicworks/webform/twilight-tuesday-nature-walk-0.