Blue Gravel Mine Trail Professional Review and Guide
"road by way of a metal tunnel, then heads into a canyon in which up until 1900, the city had exclusive rights to mine gold. Indeed, the canyon still holds relics from the area. Once through the tunnel, you’ll climb a bit and come to a water spigot that has its own dog dish. Refresh here, then press on toward the canyon, which is dotted with oak, gray pine, manzanita, and seasonal grasses. Of course, in spring the trail also comes alive with wildflowers—and the butterflies they attract."