Mariposa Grove of Big Trees Professional Review and Guide
"The giant sequoias are the largest living things on earth and are among the oldest, living up to 3,000 years. The bristlecone pines in the White Mountains to the east are older, and the coast redwoods are taller, but these are certainly the most massive and arguably the most awe inspiring. The Mariposa Grove, the largest of three in Yosemite, is divided into upper and lower groves. A veritable maze of trails, all well marked, runs through both, so you can easily design your own hike to be longer or shorter than the one described here. This hike takes you past all the highlights of both groves with a minimum amount of backtracking. Trails are marked by a series of interpretive panels with fascinating bits of information about the trees and their habitat."