Quarry is a place where huge rocks are removed from the ground. They are either removed in the form of slabs or are broken down into small pieces. Big rock slabs are used for making buildings while small pieces are used for making roads. The type of quarry depends on the type of rocks present in it. A pit quarry has a big hole in the ground. The people working in such a quarry use ladders to climb down. In a shelf quarry, rocks are found above the ground. It is easy to break rocks in a shelf quarry.