Carquinez Strait. At the bottom of the photo it opens up into San Pablo Bay and then SF Bay. Going from bottom to top: Mare Island and Vallejo, Carquinez Bridge, Martinez Bridge, Sacramento River Delta. On the right is Mt Diablo.
Carquinez Strait (Southwest flight PDX to OAK)
Looking south at the Napa Valley. From bottom to top Oakville, Yountville, Napa.
Napa Valley (Southwest flight PDX to OAK