Since 1999, Denali has remained the premium package for GMC vehicles. Step inside the cabin of a Sierra, Acadia, Yukon, or Terrain Denali, and youâll experience first-class appointments, control the latest technology, and have peace of mind knowing available advanced safety features surround you. Denali is the pinnacle of what it means to be Professional Grade.
The Mariana Trench is 1,580 miles (2,542 kilometers) long â more than five times the length of the Grand Canyon. However, the narrow trench averages only 43 miles (69 km) wide. Because Guam is a U.S. territory and the 15 Northern Mariana Islands are a U.S. Commonwealth, the United States has jurisdiction over the Mariana Trench.
Alien Creatures of the Mariana Trench. The Mariana Trench is the deepest, darkest portion of the ocean. Its maximum-known depth is 10,911 meters, which is over 2000 meters deeper than Mount Everest is tall. Light only travels about 1000 meters into the ocean water, so more than 90% of the Mariana Trench exists in complete darkness.