Developers
When riding to the summit of Mt. Diablo (Mt. Diablo State Park, Walnut Creek, California), after reaching this sign, the rest of the route, isn’t any more difficult. So, if you have the time (about triple the time it took you to get here from the tollbooth) you can make it to the summit. I’m pretty slow, but it takes me about 30 minutes to this point, another 30 to the junction (between North and South Gate roads, where water and bathrooms are availalbe) and another 50 to the summit. But some people can get to the summit in under an hour.
View, all uphill
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