The Grand Canyon is One of the Seven Natural Wonders of the World. The Grand Canyon is 277 miles long, with a width from 1/2 to 18 miles, and an average depth of one mile. The first people to look over the rim of the Grand Canyon were Native Americans. No one knows for sure when they came.

In 1933 some construction workers were building a trail in the canyon. In Luka Cave they found animal figurines made of twigs from Willow and Cottonwood Trees. One had a horn like a Bighorn Sheep, and another looked like a Deer. A third had a twig through it, as if it had been killed by a spear. These figurines are 3200 to 5000 years old. They are the earliest evidence of human life around the canyon.

The South Rim of the Grand Canyon is open all year. There is snow on this rim in the winter, but it melts quickly. Daytime temperature in the winter is in the low 40's. Night temperature is usually in the low teens and 20's. Summer temperatures range from the 80's during the day to night temperatures in the 40's. Five million visitors a year come to the Grand Canyon.

The West Rim of the Grand Canyon is 150 miles west of the South Rim, and is untouched by the 20th century world. The West Rim is located on the Hualapai Indian Reservation in Northern Arizona and opened in 1998. At the West Rim of the Grand Canyon you can view the Colorado River from an elevation of 3500 feet. Also, enjoy Guano Point and Eagle Point located at the West Rim of the Grand Canyon.

The Colorado River drops 2200 feet in its 277 mile course through the Grand Canyon. The depth of the river ranges from 6 to 110 feet. The width of the river varies from 100 to 300 feet. It has more than 150 rapids. There could not have been a Grand Canyon without an uplifting of the Colorado Plateau and the cutting action of the Colorado River. The river carries large boulders and small stones. They scrape and gouge the sides of the canyon. As the river cuts downward, it exposes the canyon walls to weathering and erosion. The layers of rock on both sides of the canyon are identical. That means the Colorado River must have separated them.

The vision of the Skywalk was to enable visitors to walk beyond the canyon walls, becoming surrounded by the Grand Canyon while standing at the edge of the Glass Bridge. This Glass Bridge suspends more than 4,000 feet above the Colorado River on the very edge of the Grand Canyon's West Rim.

Located at Grand Canyon West’s Eagle Point, The Skywalk facility will also include a 6,000 square-foot visitor’s center on three levels – underground, first story and second story – which will contain a museum, movie theater, VIP lounge, gift shop, and several restaurants and bars, including a high-end restaurant called The Skywalk Café that will offer outdoor patio and rooftop seating on the edge of the canyon. The second story will be where visitors can access The Skywalk glass walkway. The visitor’s center will also offer private indoor and outdoor facilities for meetings, special events and weddings.

During construction as many as 1,500 minor injuries per month occurred. Ninety four construction workers and 2 government employees were killed between 1931 and 1937. Twenty four fell to their deaths, 3 drowned, 10 were killed by explosions, 5 electrocuted, 26 were killed by falling debris, 26 were struck by machinery or heavy equipment, 1 died in an elevator accident and one in a cableway accident. Hoover Dam is 726.4 feet in height. It is 660 feet thick at the base and contains 4,360,000 cubic yards of concrete. The power plant at Hoover Dam has the capacity to produce 1,344,800 of electricity kilowatts. Hoover Dam has produced approximately 150 billion kilowatts-enough energy to supply a million residence for 20 years.