The caves at Onondaga State Park stay cool year-round and are a perfect place to retreat from the heat.
The caves at Onondaga State Park stay cool year-round and are a perfect place to retreat from the heat. Photo by Missouri State Parks
The caves at Onondaga State Park stay cool year-round and are a perfect place to retreat from the heat. Photo by Missouri State Parks

Just cool it: Ten places to escape the heat

June 23, 2016 10:03 AM