Yosemite National Park is famous for its spectacular glacially carved landscape. Although glaciers have come and gone many times in the ... tags: Climate_ChangeGlaciersGovernment_OrganizationsGreg_StockJosh_HellingMount_LyellMount_Maclure

Since the glaciers retreated around 15,000 years ago, rock fall has been the major force of change in Yosemite Valley. Geologists work to ... tags: Government_OrganizationsGreg_StockNationalRobert_AtkinsonrockfallYosemite

Explore the Tuolumne River from its glacial headwaters at 13,000 feet down through Tuolumne Meadows and into the Grand Canyon of the ... tags: Government_OrganizationsGreg_StockJim_RocheKristina_RylandsNationalRachel_LewisTuolumne_River