An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth âs surface. They are among the flattest, smoothest and least explored regions on Earth.
Jim Beckwourth. On this day in 1844, Jim Beckwourth discovered a path through the Sierra Nevada Mountains that now bear his name. Beckwourth Pass on U.S. Alt 40 between Reno, Nevada and Sacramento, California made overland travel to the gold fields of California. Tweet.
Move Over PCT: Youâll Soon Be Able to Mountain Bike From Washington to California. It's estimated to launch in April. But go ahead and start planning your trip now. Since 1992, hikers have been able to traverse Oregon north to south using the Pacific Crest Trail, which traces the Cascades from the Bridge of the Gods to the California state line.