The Tafoni sandstone consists of sand from ancient dunes cemented by water-soluble calcite. Due to calcite, water easily passes through the porous rock, thereby dissolving the calcite and then depositing …
The hike from Razorback Ridge trailhead to the Windyhill summit is mostly through shaded sections. Sections of it kept cool from the fog rolling in from the Santa Cruz Mountains. …
San Francisco built Pulgas Water Temple as a monument to the engineering marvel that brought Hetch Hetchy water more than 160 miles across California from Yosemite National Park in the …
Trailhead on Skyline boulevard a few steps from the ancient Methuselah tree. Starting point of the Methuselah Trail, and access to the more narrow Sierra Morena Trail.