Gianelli Trail Professional Review and Guide
"Long before the Sierra Nevada was uplifted to its present height, volcanic eruptions from the east flowed over much of the landscape north of Yosemite National Park. These flows buried most of the exposed granitic bedrock in the region. When the glaciers formed, they carried away much of the volcanic debris that buried the landscape, re-exposing the granitic bedrock. Beyond the northern end of the High Sierra, this glacially re-exposed granite gives way to deep volcanic deposits that weren’t completely removed by glaciation, thus forming a landscape much different than areas farther south in the Sierra. The contrasts between the two rock types is often striking, making this hike not only scenic but also offering insights into the geologic history of the region. This fine short hike ascends gradually from the trailhead to the panoramic viewpoint of Burst Rock, then drops into a granite bowl where you find lovely Powell Lake."
--Ron Adkison, Best Easy Day Hikes: Northern Sierra (Falcon Guides).
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