The company I work for has a project we are working on , a large, lined, waste water storage pond. Last Friday the were excavating one of the walls when they hit something buried. Everybody was really suprised when they finally uncovered the object after a day and a half of digging. It turned out to be the remains of a Turn of the Century Steam Locomotive.
It's amazing it was buried in this old phos acid, fertilizer plant and nobody knew it.