Limestone eroded by Mill Creek. Fall colors in Cataract Falls State Recreation Area, Indiana, USA.
Mill Creek erodes ancient limestone, upstream of Lower Falls in Cataract Falls State Recreation Area, an hour southwest of Indianapolis, near Cloverdale, Indiana, USA. Autumn foliage colors were brilliant but water volume was low for this photo in mid October 2015. The park's limestone bedrock formed millions of years ago from skeletal remains of marine organisms (such as coral, forams and molluscs) when the region was covered by a large shallow ocean.Add to Cart Add to Lightbox Download