GPS data collection along the Big Sur coast in 2007 (L), and 2015 (R)
GPS data collection along the Big Sur coast in 2007 (L), and 2015 (R)Left: USGS research hydrologist Mark Reid (left) and USGS research geologist Kevin Schmidt collect GPS data along the Big Sur coast on September 19, 2007. Photo credit: Maiana Hanshaw, USGS (now with swisstopo).