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.
It is home to the deepest known point in the ocean - the Mariana Trench off Guam - which plunges to a depth of about 10,924 meters (nearly 7 miles). Because of the depth of the Pacific Ocean, tsunamis (huge waves created by earthquakes) can reach speeds of 750 kilometers an hour, the same velocity as a jet airplane. Well recently a submarine plunged down and measured and the new depth is 12,999 meters deep.