The Diavik mine in Canada looks like this
The Diavik diamond mine, located in northern Canada’s Archean-age Slave geologic province, is one of the world’s leading sources of gem diamonds. It has produced over 100 million carats of diamonds since mining operations began in 2003. In fact, Canada is one of the main producers of diamonds in the world.
The early 1990s saw the discovery of kimberlite pipes in Canada, which led to the development of several major diamond mines. Only about 50 diamond-bearing kimberlite deposits that can be mined economically have been discovered worldwide since the 1870s, primarily in Australia, Angola, Canada, Russia, and South Africa.