"An amazing hike. I literally went out here not even knowing there was a hot spring until I was tipped off by some other trailgoers. Amazing! Let me just say, do NOT attempt to day-hike this unless you run marathons on the weekends or something. I like to think I am in pretty decent shape, but I was having serious doubts by the time I got to the springs. There is a lot of gradual but unrelenting elevation change. It also gets a bit chilly in the canyon at night even in the summer, so plan accordingly. Other than that, pack some wine, bring your dog, and enjoy the (clothes optional) springs!"
Visited on Sep 15, 2009

At the eastern fringe of the San Francisco Bay Region, Mount Diablo, elevation 3,849 feet, stands alone on the edge of California’s great Central Valley. At this point, the Coast Range consists only of low hills, none high enough to block the view from the upper slopes of the mountain. As a result, the view is spectacular. Many visitors to Mount Diablo head straight for the summit to enjoy the famous view.

San Francisco is a popular international tourist destination, renowned for its chilly summer fog, steep rolling hills, eclectic mix of Victorian and modern architecture and its famous landmarks, including the Golden Gate Bridge, the cable cars, and Chinatown. The city is also a principal banking and finance center, and the home of over 30 international financial institutions, helping to make San Francisco fifteenth in the world's list of cities by GDP and eighth in the United States.