BLACK ROCK DESERT, Nev.—Muddy roads that left tens of thousands of partygoers stranded for days at a counterculture festival had dried up enough by Monday afternoon to allow them to begin their exodus from the northern Nevada desert.
Burning Man organizers said they started to let traffic flow out of the main road around 2 p.m. local time—even as they continued to ask revelers to delay their exit to Tuesday to ease traffic. As of Monday afternoon, they said about 64,000 people remained at the festival site.