 
Landsat images of the Black Hills and other locations in the United States and Alaska are available free of charge through the NASA-funded, Web-enabled Landsat Data project at http://weld.cr.usgs.gov thanks to the work of David Roy, senior scientist at the Geological Information Science Center for Excellence at SDSU. He and Dennis Helder, associate dean of research for the College of Engineering, are members of the 2012-2017 Landsat Science Team working on the newest satellite, Landsat 8, which was projected for launch Feb. 11.
