The engine house looks over Rinsey Cove and Rinsey Head.
Wheal Prosper is on the southern end of the Godolphin-Tregonning Granite outcrop ,
one of five granite batholiths in Cornwall .
The engine house has a mixed construction of granite and slate (killas) .
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Location - west of Porthleven in section - 16
Ref: 209
Date: 22/09/2014
Location: SW 5941.2704