DOTSERO, Colo. — The deadliest volcanic eruption in U.S. history took place 40 years ago in Washington state. It was shortly after 8:30 a.m. on May 18, 1980 when Mount St. Helens erupted. Over a ...

DOTSERO — At the base of Colorado’s lone active volcano is a small mobile home park, where on this day a resident offers a fair warning to a pair of curious visitors. “Is it four-wheel drive?” he asks ...