Harnes Marsh Walk-about

I had heard of Harnes Marsh through a couple birding websites and had the recent opportunity to have a morning walk-through. I headed south down the dirt road from my parked car and made my way around to the fields and woods on the other side of the water, a very quiet and out-of-the-way place to walk. Trees had dozens of empty Apple Snail shells underneath, discarded by Snail Hawks and Limpkins. The shells, in themselves, were interesting to look through and worth taking home a sample. 
Where is this?  Map   Satellite view

Marsh - South end of lake

Young Sandhill Crane pair - no chicks yet

A Limpkin - the Crying bird