LOS ANGELES—A fierce California wildfire crept toward the boundary of Yosemite National Park on Tuesday as crews fought through steep, often inaccessible terrain and thick smoke to protect a string of small mountain communities in the path of the flames.
The so-called Ferguson Fire, which started on Friday night and killed a firefighter the following day, had charred nearly 19 square miles (49 square kilometers) by Tuesday afternoon and was burning just a few miles (km) outside the park.
