The Minnesota Department of Natural Resources is inviting the public to join a dragonfly expert and learn more about dragonflies and damselflies at River Warren Outcrops Scientific and Natural Area in Renville County. The free walk will take place at 1 p.m. on August 3rd. A dragonfly expert will lead the event and capture individual dragonflies for closer examination. Visitors are encouraged to bring dragonfly and damselfly books along with binoculars to aid in identifying various species. Long pants along with footwear appropriate for uneven terrain are recommended.