Along with the rugged ridges and hills in this near-vertical, synoptic photograph of San Francisco, a number of bays are evident—elongated San Francisco Bay, oval San Pablo Bay north of San Francisco Bay, and smaller Suisun Bay and Grizzly Bay east of San Pablo Bay. Richmond, along the eastern shore of San Francisco Bay, sits on a peninsula that separates San Pablo Bay from San Francisco Bay. Two marshy areas are visible to the north and northeast—dark Grizzly Island, traversed by many sloughs, and the green and orange diked areas of salt extraction or mining, similar to the pattern of salt mining activities along southern San Francisco Bay.