This outdoor pavilion, located west of the LeFleur's Bluff Playground, includes tables and seating for up to fifty students.
MDWFP's Mississippi Museum of Natural Science and the MS Children's Museum use The Den for field trips, events, and programs, including the award-winning Mississippi Science Fest and Park After Dark events. An adjacent sloped lawn allows the structure to be used as an open-air amphitheater for large assemblies.