Читать книгу Afoot and Afield: San Francisco Bay Area. A Comprehensive Hiking Guide онлайн

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A line of California bay and coast live oak, left, borders a seasonal creek that flows through a ravine and into the marsh, saturating it with water during the rainy season. Just before you reach the ravine, you pass a trail, right. Your trail dips down to cross the ravine, and once across, turns sharply left to marker 3, right. The large boulders seen from here are schists, composed of 12 to 15 different types of minerals — a relatively large number. (In comparison, Sierra granite contains only three to five different minerals.) The colored blotches on the boulders are lichens, composite plants containing both a fungus and an alga.

Out in the open, you reach marker 4. Just beyond it, at an unsigned junction, the trail forks. Here you stay right and climb over rocky ground. Nearing the seasonal creek, you come to marker 5.

At a T-junction just ahead, you turn left and climb to a junction, where the trail that forked left just beyond marker 4 rejoins your route. Ahead on the right is marker 6, which refers to birds found in the preserve, including raptors and songbirds, and also to the large rock formation, described as “a gigantic Indian warrior” standing guard on the hill to your left.