The total solar eclipse Monday is the first one to cross the United States coast to coast in a century, and the first one entirely within the United States since before there was a United States. We're collecting the best photos from along the path of totality, a 70-mile-wide, 3,000-mile-long swath from Oregon to South Carolina where millions of people are assembled to watch the spectacle.

Anticipation builds in U.S. for solar eclipse

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Total solar eclipse enthusiasts gather in Madras, Oregon on August 18, 2017, the rural central and eastern part of Oregon is hosting dozens of festivals to help manage the crowds of over a million visitors are expected to the region for the Monday August 21, 2017 / AFP PHOTO / ROB KERRROB KERR/AFP/Getty Images (Rob Kerr/AFP/Getty Images)