▁Louis ▁County ▁Department ▁of ▁Park s , ▁Missouri ▁Department ▁of ▁Conserv ation , ▁U . S . ▁Fish ▁& ▁Wild life ▁Service , ▁Bat ▁Conserv ation ▁International , ▁the ▁Missouri ▁Kar st ▁and ▁C ave ▁Conserv ancy , ▁and ▁the ▁Mer ame c ▁Valley ▁Sp el unk ers . ▁Other ▁fa una ▁of ▁the ▁cave ▁include ▁big ▁brown ▁b ats , ▁little ▁brown ▁b ats , ▁eastern ▁pip ist rell es , ▁cave ▁sal am and ers , ▁and ▁is op ods . ▁ ▁After ▁the ▁gate ▁was ▁installed , ▁the ▁population ▁of ▁b ats ▁has ▁increased . ▁ ▁Mississippi ▁Tra il ▁ ▁The ▁Mississippi ▁Tra il ▁is ▁a ▁ 5 . 1 - mile , ▁flat , ▁p aved ▁trail ▁loop ▁accessible ▁to ▁h ik ers ▁and ▁b ik ers . ▁It ▁is ▁located ▁in ▁the ▁flo od plain ▁bottom s , ▁and ▁goes ▁through ▁bottom land ▁wood lands ▁and ▁wet lands . ▁It ▁occasionally ▁can ▁under go ▁periodic ▁flo oding ▁from ▁the ▁Mississippi ▁River . ▁The ▁fl ora ▁include ▁wild ▁grass es ▁and ▁wild flow ers , ▁silver ▁map le , ▁sy cam ore , ▁cot ton wood , ▁black ▁will ow ▁and ▁box ▁elder . ▁The ▁fa una ▁include ▁be a vers , ▁mig rat ory ▁water f ow l , ▁great ▁blue ▁her ons , ▁and ▁e gre ts . ▁ ▁Spring ▁Valley ▁Tra il ▁ ▁The ▁Spring ▁Valley ▁Tra il ▁is ▁a ▁ 3 - mile ▁natural ▁t read way ▁trail ▁accessible ▁to ▁e quest ri ans ,