This document describes 7 large excavations around the world: 1. The Kimberley Big Hole in South Africa, which yielded over 3 tons of diamonds before being closed in 1914 after removing 22.5 million tons of earth. 2. The Glory Hole at Monticello Dam in California, which is the largest in the world and drains 400 cubic feet of water per second when the dam is at full capacity. 3. The Bingham Canyon Mine in Utah, supposedly the largest man-made excavation on earth, which is 3/4 mile deep and 2.5 miles wide after beginning extraction in 1863. 4. The Great Blue Hole off the coast of Belize, a near-