Explore the trails of Severson Dells after dark, guided by a staff naturalist. Open your senses to experience nature under cover of darkness. Exercise your night vision, adjusting to the darkness and reawakening other sense perceptions. To that end, we discourage the use of flashlights on the trail (although, of course, you may bring one along in case of need). Free program; all ages are welcome. Please register in advance so that we can be prepared for the turnout.