A collection of distilled sarcastic wisdom, numerous photographs, discussions of books and stuff to learn and more stuff to think about from a retired economics professor turned blogger and photographer.
One section of the residue from the world's largest and deepest open pit mine and excavation. According to Wikipedia, the mine is .75 miles deep, 2.5 miles wide, and covers 1,900 acres. Again, as per Wikipedia, the mine is owned by the Rio Tinto Group, a UK mining company, which also, besides the mine, operates a concentrator plant, a smelter, and a refinery. The mine has been in operation since 1906.