The Cactus to Clouds ascent just outside Palm Springs, Calif., is grueling, but natural treasures, and a speedy trip down, ...

Eruptions of steam, ash, and tephra continued until June 1917, when the volcano resumed its quiet profile, with minor steam clouds occasionally reported. Since 1921, Lassen Peak has remained quiet.

And it opens Tuesday. Clouds and high winds hampered efforts by rangers on Thursday to reach two climbers who remained high up on North America's tallest peak two days after first sending a ...