On July 18th, Rod and I took advantage of the childfree weekend and joined an organized hike to Starved Rock State Park. The park is along the Illinois River near Utica and Ottawa. The weather was perfect. The temperature was very comfortable for mid July. I wore jeans that day to protect my legs from the brush and didn't overheat.
Starved Rock is made up of 18 canyons carved by glaciers. There are a few year-round waterfalls while other waterfalls form briefly after the winter thaw and spring rains. The exposed, carved stone is mostly St. Peter sandstone.