Yosemite National Park - Glacial Extent Tioga - Open Data

This map was produced, over a period of more than 50 years, by scientists from the US Geological Survey and the National Park Service, based on extensive field mapping and remote sensing analyses. This is the extent shown in the USGS Scientific Investigation Series Map "Extent of the Last Glacial Maximum (Tioga) Glaciation in Yosemite National Park and Vicinity, California" by Wahrhaftig et al, 2018.