Great shot - very compelling. The comments show how it triggers the imagination.
Is it sitting on grade? Looks like it is sinking in the ground. If on concrete and there is a void beneath, pretty scary. This is a valuable chunk of high grade scrap steel - must not have been within reach of that big crane or it would have been removed with the rest of machinery. Since scrap prices have jumped since 2007, it is likely that a further demolition/salvage project is underway or planned. (Many tons of crumbling asbestos on the piping and boilers, but this piece is clean scrap.)