This photograph was taken along the Pacific coast in California. Waves from the Pacific Ocean are crashing against the rocks along the bottom of this cliff. The violent waters look quite treacherous as they smash against the jagged rocks.
The area around the San Francisco Bay, is commonly referred to as the "San Francisco Bay Area," or just the "Bay Area" for short. This includes San Francisco, San Jose, Oakland, Silicon Valley, Mountain View, Berkeley, Napa, and many other notable locations. There really is no clear definition of the Bay Area, with different people defining different boundaries. I have heard a few different definitions myself while living here.