The hook
A boulder-choked gorge on Alameda Creek in the Sunol backcountry that early park boosters named "Little Yosemite" — overselling it charmingly, and it's still worth the walk.
01Why it's worth it
Set the expectation honestly, like the locals do: "I wouldn't go there expecting Little Yosemite to look like Yosemite." What it is: a compact rocky gorge where Alameda Creek — the Bay Area's biggest stream — crashes through green-grey boulders, reached by an easy, nearly flat two miles from the Sunol visitor center through classic oak-savanna hills. After winter rain it performs ("probably a roaring torrent"), and in spring the surrounding hills run green with wildflowers and newts cross the trails. The deeper value is what it opens onto: Sunol Regional Wilderness is the quiet corner of the East Bay parks, with weekday solitude locals brag about ("almost every time I went during the week I hardly saw a single person"), backpacking sites up-canyon, and the Ohlone Wilderness Trail heading off toward Del Valle for the ambitious. Dogs run off-leash, which for many East Bay people is the whole point.
02How to experience it
Sunol Regional Wilderness entrance off Calaveras Road (parking fee); take Camp Ohlone Road — a flat gravel road — to the gorge, scramble the boulders, come back on the Canyon View Trail for modest climbing and views. Go after rain, on a weekday if you can. Summer is hot, dry, and the creek shrinks to pools. On the drive in, the Sunol Water Temple — a Beaux-Arts rotunda where three underground water sources meet, sister to the Pulgas temple on the Peninsula — sits improbably among the ranch fields, a two-minute detour locals file under "weirdest places in the Bay Area."