See places in United States

Mammoth Cave

Location: Kentucky, USA
Creation Date: 1941
Area: 214 sq km
Length of trails: 19 km, total: 320 km
Visitors per year: 1 880 126 (2004)
Headquarters: State of Kentucky

The world’s largest cave system is located within the United States, located in Mammoth Cave National Park in the state of Kentucky, 144 km south of the city Louiville. Europeans came to these caves for the first time in 1799. In 1972 speleologists studying these areas have shown that corridors in three mountain ranges: Flint, Mammoth Cave and Toohey combine to form a system of at least 560 km.

The caves were formed by water that dissolved under a layer of limestone occurring hard rock. Zdumiewajca collection of stalactites and stalagmites and curtains creates a solid limestone waterfalls and delicate flowers look like crystals.

Echo River, flowing 110 m below the surface, provides shelter for fish, lobsters and shrimp. Living organisms adapt to their environment – the animals chewing on the river, into which no sunlight reaches, are devoid of eyes and color.

Mammoth Cave National Park – covers an area of ​​the world’s longest cave. Park (area 214 km ²) located in the central part of the state of Kentucky, about 160 miles south of Louisville. Park visited annually by nearly 2 million tourists. In 1981 he became a UNESCO World Heritage Site.

Mammoth Cave is sometimes referred to as one of the wonders of the Western Hemisphere. Located in the hills band made up mainly of limestone. Over millions of years of local streams acidified water permeated through the porous scale digging himself in her hallway. Tourists can choose from several routes with a total of 19 km of corridors on five levels. The lowest is 110 m below the surface of the ground. In the cave there are several lakes, rivers and waterfalls. The largest river is the Echo River 6-18 mi wide at 1,5-8 m deep, live in the eyeless cave fish. Cave fauna is complemented by several species of bats, crayfish and many insects.

The first white men who discovered the cave, the local settlers were appearing on the site in the late eighteenth century, however, footprints, Muni, simple tools and torches butts prove that they knew and lived in the cave era of pre-Columbian Indians. The first one concerning the great cave, from the year 1798.

During the war with the British in 1812 the cave was mined nitrate required for the manufacture of gunpowder. In the early nineteenth century, Mammoth Cave was the only known North American site of nitrate. Mining ceased shortly after the war, and in 1816 the cave has become a popular place for visitors. Walls and Mammoth Cave formations are very colorful and take on fantastic shapes.

Within the national park there are three cave systems: Mammoth Cave System, Crystal Cave System Flint Ridge system inside and Joppa Ridge System. In 1972 it became clear that there is a connection to Mammoth and Crystal Caves, which creates the world’s longest system of ways: over 587 km.

Badlands

Badlands, badlandy (in English literally bad land) – upland areas, mainly in the dry climate zone and semi-dry, with poor vegetation. They are characterized by strong fragmentation (especially in the edge portion) through a network of deep ravines, formed by a process of periodic flushing during heavy rains. Rainwater erosion activity within the substrate poorly scementowanego also leads to the formation of various isolated forms of land – island mountains, needles, mountains and other witnesses. Bleakness of this land, unfavorable surface, poor accessibility, et al. decide on the limited capabilities of their management.

An example of badlands is the southwestern part of the state of South Dakota, where a large proportion of such areas are protected within the Badlands National Park, as well as in North Dakota Theodore Roosevelt National Park.

This land of jagged mountain ranges, deep gorges, narrow, flat ended hills and desert, which seems to stretch endlessly, very aptly named – Badlands (Badlands). Both the Sioux and Europeans gave to this area in their respective languages ​​of the same name. It lies in south-western Dakota and northwestern Nebraska (USA). There is extremely hot.

Badlands plateau began to form about 80 million years ago. This area was the bottom of shallow sea with an area of ​​15 500 km ².

Uplift that about 65 million years ago formed the Rocky Mountains, also increased the this area. Water, flowing, washed off the top layer of soil and some rocks. Preces erosion continues – Vampire Peak peak is reduced by 15 cm per year.

Grand Canyon

Grand Canyon is one of the greatest natural wonders on earth. Stand on the edge and admire the stunning magnitude and beauty of this unforgettable experience. The length of the canyon is 443 km and its width ranges from 200 m to 29 km. Maximum depth of the canyon (in the granite gorge) is 1.6 km.

Grand Canyon cut out from the plateau found located in the northwestern part of Arizona, who was once the bottom of an ancient ocean. Two rivers, ancient and Hualapo Colorado, broke through the plateau and merged to form present-day Colorado River.

At the same time, about 60 million years ago, as a result of crustal movements plateau shifted upward. Flowing rapidly (at speeds up to 32 km per hour.) Colorado River canyon sides rinsed, boring deep trough.

The layers of rock canyon is recorded geological history of this region. The youngest rocks on the top count 225 million years. Tena bottom – over 2 billion years. All the geological layers contain fossils of marine animals, trees and dinosaurs.

Grand Canyon – the turn of the Colorado River in Arizona in the U.S. by the Colorado Plateau, consisting mainly of slate Yishnu, as well as slate, limestone, sandstone and granite intrusions. The canyon is full of geological cross-section of the Proterozoic (Precambrian era) after the Triassic (Mesozoic Era). Each series of rock layers has a different hue. Sedimentary rocks rich in fossils of the canyon, from primitive algae to trees, sea shells from the remains of dinosaurs. Canyon formation time is estimated at about 10 million years. Canyon began to emerge first in the western part of the current course, 17 million years ago, while the eastern end amounted to 5-6 million years ago. In the next million years, took the plunge indentation and deepening of the river canyon, while preserving its length. His “architect” was the Colorado River, formed the canyon as the Colorado Plateau to rise. Prior to the construction in 1963, Glen Canyon dam river canyon carried by 500,000 tonnes of sludge per day and is currently only 80,000 tons. At present, the Grand Canyon is 349 km long and the deepest site (Granite Gorge – Granite Gorge) in 2133 m depth. The width varies from about 800 m (under the viewpoint Toroweap the North Rim – North Rim) to 29 km at its widest point. This is the biggest breakthrough of the river in the world (though not the deepest). The deepest canyon on earth is Cotahuasi canyon in Peru. The largest and deepest canyon in Europe is a breakthrough of the river Tara in Montenegro.
This area is a National Park – Grand Canyon National Park.

Skywalk observation platform

March 28, 2007 has been the grand opening of the glass bridge over the western part of the Grand Canyon (Grand Canyon West). This “highest balcony” in the world. It is situated at an altitude of 1219 meters above the ground. The opening attraction for the audience held a few days later. For 29.5 USD / person (03.2009) (and approximately 30USD for purchase tourist route) interested have the opportunity to enjoy the opening abyss beneath them the Grand Canyon, separated from her only a transparent glass pane. Glass Skywalk observation deck is considered a miracle of engineering, cost $ 30 million and has a horseshoe-shaped projecting more than 20 meters from the edge of a cliff that drops straight down to a depth of 1220 meters. Located 144 km in a straight line to the west of Grand Canyon National Park, visited every year by 4.1 million tourists in areas Hualapai Indian Reservation in Arizona. The platform must not take pictures (cameras and mobile phones are transferred to the deposit). Photos are executed only by persons authorized and available for a fee.

Skywalk was designed by architects MRJ Architects and their design solution address the business Lochsa Engineering. Glass, which brought a horseshoe glass taken from the German plants, specializing in the manufacture of structural glass for unique building projects worldwide. According to architect Mark Johnson, Skywalk at the same time able to carry 120 people and can withstand winds in the Canyon at 160 km per hour. The platform also features a cushioning system that did not fell the vibrations caused by the displacement of people.

 

Death Valley

Death Valley – the area of ​​outflow of depression in the Mojave Desert in southern California. The lowest point is 86 m below sea level, acting in the greatest depression in the Western Hemisphere. Depression was formed in the Tertiary Rift Valley. Valley surrounded by huge mountain range with its highest peak Panamint Telescope Peak 3368 m and Amargosa mountain range. Tropical climate, dry, with rainfall not exceeding 50 mm per year (in some years no rain at all). The driest place America and one of the hottest places on Earth where 10 July 1913 the temperature reached 56.7 ° C (134 ° F). This is a record heat for North America. Rivers are periodic (Salt Creek, Furnace Creek). Slightly salty lake called Badwater has a very unusual fauna.

In 1933 he was proclaimed a national monument to the USA, and in 1994 a national park.

  • Area – 8374 km ²
  • Length – 225 km
  • Width – from 8 to 25 km
  • The lowest point – 86 m below sea level, Badwater pond bottom

Death Valley is a deep strip of desert stretching to the south-eastern California (USA). This is the hottest and most dry area in North America, and its lowest point (82 m bsl) is the largest reduction in the Americas. Rocks, with sparkling in the sunlight like a rainbow minerals make this area is stunningly beautiful. Its age is estimated at one million years.

50 thousand. years ago, this area was flooded with waters of Lake Manly. About 3 thousand. years ago in Death Valley was still a shallow lake. When the water evaporated from it, the bottom layer of salt remained, creating a visible crust today. Even when the area will drop a little rain, the water evaporates, the solution is absorbed into the soil.