Porter Cave

https://picasaweb.google.com/vysniacraft/PorterCaveFalls20110221

Best landing ever!

tomkarr.com

Near Paragon. ATV's ride there, has a donation box. No Trespassing signs abound.

Thanks to Barry Welling for the tip!

Pushing the limits: A history of Quaternary proglacial lakes from central Indiana’s Mill Creek Valley

By JOHN ROBERT WOOD B.S., Purdue University, 1999

THESIS Submitted as partial fulfillment of the requirements for the degree of Master of Science in Earth and Environmental Science in the Graduate College of the University of Illinois at Chicago, 2009, Chicago, Illinois

New insights on Illinoian deglaciation from deposits of Glacial Lake Quincy, central Indiana

This looks like a reasonable approximation of the glacial Porter Cave siphon:

From http://www.in.gov/isdh/22926.htm#Porter Cave and Campground

Porter Cave and Campground

Drunkards Pike Road

Paragon

39 Dependent sites

0 Independent sites

Water: Public

PWSID: N/A

Sewage Disposal: Unknown

Pool: No

Beach: No

Owner:

Christian Tabernacle Church

Joseph Kent Jordan

802 South Franklin Road

Indianapolis IN 46219

Phone: