The Cascade Mountains is a range extending over 1,120 km (700 miles) in the northwest United States
from northern California, through Oregon and Washington to British Columbia.
Its highest peaks are Mount Rainier (4,392 m, 14,409 ft.), Mount Adams (3,742
m, 12,277 ft.), Mount Baker (3,285 m, 10,777 ft.), and Mount Hood (3,424 m,
11,233 ft.). The region is tectonically active – a fact spectacularly
demonstrated by the 1980 eruption of Mount St Helens – and riven by
The phenomenon known as earthlights,
believed to be associated with faults, has been seen close to the location
where Kenneth Arnold reported the first "flying
saucers" in 1947, suggesting a possible link.