Originally, the plan was to build a wye up that little creek on the north side. Unfortuately, that is a wetlands area, and there was concern about putting track there. The loop was a 2nd choice and rumor has it a mule traced out the path (oops wrong loop).
The original site of the turntable is roughly at the end of the reconstructed spur (http://members.home.net/drgw0579/osier.html). Originally we had couple more sticks of rail on it, but after consulting a site plan, we realized the turntable was right there.