20 Spectacular Night Sky Photos of 2013

Source by : SPACE.COM

  



















Most Dangerous Diving Spot in Texas



Jacob's Well is one of the longest underwater caves in Texas. From the opening in the creek bed, the cave descends vertically for about ten meters, then continues downward at an angle through a series of silted chambers separated by narrow restrictions, finally reaching a depth of forty meters.
Through the years, many have successfully explored the first and second chambers of the well. The first chamber is a straight drop to about 30 feet; then it angles down to 55 feet. Nourished by the rays of sunlight that penetrate the crystal water, this cavern area is bright and is home to algae and wildlife. The second chamber is a long funnel to 80 feet, where there is a restricted opening to the third chamber. Inside the second chamber is a false chimney, which appears to be a way out of the well but has trapped at least one diver. The third chamber is a small room with a floor of unstable gravel. Divers must inflate water wings to navigate this chamber successfully, trying not to stir up silt or dislodge the gravel.


The passage into the fourth chamber is very tight. The few who have seen the fourth chamber say it is "virgin cave" with fantastic limestone formations and no gravel. Covering the bottom is fine silt that can totally obscure vision when kicked up by one misstep.
Ironically, there was a time when it was impossible to descend into Jacob's Well. "There's a picture of me at 3 years old at Jacob's Well in the family album," recalls 79-year-old historian Dorothy Wimberley Kerbow. "My dad would throw me into the well. You couldn't sink down because the spring would just bubble you up with such force."
Kerbow recalls that she and her friends would often visit Jacob's Well in the 1950s, and it was impossible to go more than two feet below the surface due to the force of the spring.

In 1924, Jacob’s Well was measured to have a flow of one hundred and seventy gallons per second (six hundred and forty liters per second) discharging water six feet into the air. Over the years, the well’s flow had diminished allowing divers to reach the deepest chambers. The spring ceased flowing for the first time in recorded history in 2000, and again in 2008.
The first time the spring stopped flowing, the event was considered by many as symbolic of the region's increasing water shortage and quality problems. “It was a wake-up call for everyone,” recalls landowner David Baker. “We don't want it to turn into Jacob's Cave."
David Baker has given up his home to form the Jacob’s Well Natural Area to restore and protect this sensitive area for future generations.



Source : Amusing Planet

Ward Charcoal Ovens of Nevada

 
Ward Charcoal Ovens are a collection of six 30 feet high, beehive-shaped charcoal ovens located inside the Ward Charcoal Ovens State Historic Park in the Egan Mountain Range approximately 18 miles south of Ely in Nevada, in the United States of America. Between 1876 and 1879, the Charcoal Ovens were built to produce charcoal from pinyon pine and juniper. After their function as charcoal ovens ended, they served diverse purposes, such as sheltering stockmen and prospectors during foul weather and even serving as a hideout for stagecoach bandits. Today they're the main attraction in Ward Charcoal Ovens State Historic Park.

The ovens take their name from Thomas Ward who founded a local mining district in 1872. The mine produced go

ld and silver ore that required high burning temperature that can only be provided by charcoal, inspiring the construction of the ovens in the mid 1870s. The parabolic shape of the beehive ovens caused heat to be reflected back to the center where the wood slowly burned to produce charcoal.

Each of the six ovens stood thirty feet tall and was twenty-seven feet in diameter at the base. The walls are 20-inches thick, made from rocks with three rows of vents. Wood was cut into 5-foot to 6-foot lengths and stacked inside the ovens vertically using the lower door. The loaded oven was ignited and the metal door was cemented shut. It took 13 days to burn and empty a 35-cord (one cord is 4-feet high by 4-feet wide by 8 feet long) kiln.
Eventually, charcoal ovens were phased out by the discovery of coal, by depleted ore deposits, and by the shortage of available timber. 

The technique of burning wood to produce charcoal can be traced back to traditional Old World practices. Centuries ago, woodchoppers found that slowly burning timber in an oxygen-starved environment produced charcoal, which was easier to transport and burned at a higher temperature than wood. Charcoal production was especially common in the Alps, in Scandinavia, and in Eastern Europe. Charcoal burners traditionally used shallow pits without the benefit of permanent structures.
 
 
 
 
 
Immigrants brought the technique of charcoal burning to Nevada mining districts where it was particularly useful when milling stubborn ore bodies that required high temperatures. The charcoal burners consumed pinyon and juniper, which was of little use for building or for mine supports. The industry earned a place in Nevada history with the famed Charcoal Burner's War of 1879, when Italian and Swiss immigrants fought wealthy mill owners of the Eureka Mining District to the east of the Ward mines.


After suffering from vandalism and natural erosions, the long-abandoned ovens became a state park in 1957. These Ward ovens are the best-preserved of their kind in Nevada.


source : Amusing Planet

Island Dubai “The World” Artificial Archipelago













 
The World Islands is an artificial archipelago consisting of about 300 small islands constructed in the rough shape of a world map, located 4.0 kilometers off the coast of Dubai, United Arab Emirates. The islands are composed mainly of sand dredged from Dubai's shallow coastal waters. 321 million cubic meters of sand and 31 million tons of rock were used to build the islands that cover an area roughly 6 by 9 kilometers, and is surrounded by an oval-shaped breakwater island. The islands, which are named after countries such as Great Britain, Germany, Switzerland, etc., themselves range from 14,000 to 42,000 square meters in area and located roughly 100 meters from each other.
The project debuted nearly 10 years ago, but work has been stalled periodically ever since due to the global recession. Two years ago, the entire project came very near to derailment when Penguine Marine, the company contracted to provide ferrying services to and from the shore, alleged that the islands were sinking into the shallow sea. Nakheel Properties Group, the property’s developer, denied these reports.
 

Although nearly 70 percent of the islands have been sold, according to a January 2012 report, the islands have remained mostly untouched due to the delay and lack of infrastructural necessities. Only two islands out of the 300 islands have any buildings on it. One of them, the Lebanon Island, is the only one that has so far been developed commercially. It’s owned by Abu Dhabi-based businessman Ravi Raman who plans to use it private corporate events and public parties.
Other plans are abound. Dubai-based Kleindienst Properties announced on May this year that it would soon start construction work on the “Heart of Europe”, an ambitious development that is planned to spread across six of the islands. Nakheel Group is itself developing a resort named “Coral Island” over 20 islands that make up the North American part of The World. Another investment group from Kuwait has purchased 14 islands that make up Australia and New Zealand where there’ll be another resort. Finland, Ireland, Great Britain and Moscow are acquired by different businesses groups with plans to transform them into villas, pubs, fashion-themed resorts and more.
 

 

 



 
source : Amusing Planet

The Amazing Architecture And Design of Eixample

Eixample is a district of the Spanish city of Barcelona, that lies between the old city and the surrounding small towns. The district was built as an extension (hence the name “Eixample”) when Barcelona started to grow during the middle of the 19th century. The 7.5 square km district is characterized by long straight streets, a strict grid pattern crossed by wide avenues, and octagonal city blocks - rectangular blocks with the corners cut off, which are distinctive for Barcelona. This was the visionary, pioneering design by Spanish urban planner Ildefons Cerdà, who considered traffic and transport along with sunlight and ventilation in coming up with his characteristic octagonal blocks.
 
 
Cerdà’s central aim was to overcome social problems by using quadrangular blocks of a standard size, with strict building controls to ensure that they were built up on only two sides, to a limited height, leaving a shady square or garden in between. This recreational open space with open sides to the blocks was to guarantee the houses the maximum amount of sun, light and ventilation. The angled corners allowed the streets to broaden at every intersection making for greater visibility, and fluid traffic in all directions. Cerdà had steam trams in mind, and it was its long turning radius which determined the angle of the corners of the buildings. Trams were never installed, and the city planners unfortunately ignored many of his other provisions.
Cerda wanted housing blocks to be orientated NW-SE to ensure all apartments received sunshine during the day. Each district would be of twenty blocks, containing all the community shops and services, and each block were to have at least 800 square meters of gardens. Cerda’s idealized use of urban space was scarcely achieved. The blocks went up to much more than the planned heights, and in practice all the blocks have been enclosed, with very few inner gardens surviving. Most of the inner courtyards today are occupied by car parks, workshops and shopping centers. The streets were narrower - only one of the two diagonal avenues was carried out - the inhabitants were of a higher class than the mixed composition dreamed of by Cerdà. The grid pattern with its distinctive octagonal blocks, however, remains as a hallmark of Barcelona’s Eixample.
Over the past few years the city has begun trying to implement Cerdà's idea for green public spaces behind the buildings. When a block is vacated because of the relocation of a business, the city takes up the block and redesigns it with parks and open spaces. The ultimate goal is to create one patio-garden for every nine blocks, but its unlikely that so many will become available in the near future.

Beauty of Hotel In Inner Mongolia


A magnificent new hotel has bloomed amid the vast sea of sands in Xiangshawan Desert, Inner Mongolia, 800 kilometers west to Beijing. Named the “Desert Lotus Hotel”, the structure consist of repeating triangular white tent tops, rotated 45 degrees and connected together in a circular formation like a lotus. Free of tiles and bricks for construction, the resort is built with low carbon environment friendly materials to utilize solar, water and wind energy in the desert, reducing environmental pollution and strengthening ecology protection. Load bearing walls give the structure the bulk of its structural integrity, while a dazzling array of repeating triangular panels provide shade and protection from the harsh elements.
 
Due to the restriction by its special geographic condition, PLaT Architects invented a new structural system that fix in fluid sands using only steel panels without the help of concrete or water. The panels and the supporting skeleton structures are pre-fabricated, and make the base of the building a large container for sands. Thus, the steel panel structure can function as a boat floating on desert that carries the building. The sands in and out of the structure exert same forces to each other, and thus it is flexibly stabilized.

 
The hotel is part of a new resort built amid a vast sea of sand dunes, increasingly popular with Chinese tourists. The resort hosts Mongolian-themed performances, camel rides, desert surfing, and more.

source : Amusing Planet

Gisborne Airport: Runway With a Railway Crossing

 
Gisborne Airport is a small regional airport that is located on the western outskirts of Gisborne, the East Coast of the North Island of New Zealand. The airport is one of the very few airports in the world that has a railway line intersecting the runway. The Gisborne airport which covers a land of 160 hectares has three grass runways and one main runway that is intersected by the Palmerston North - Gisborne Railway Line. The Wynyard Airport, on Tasmania's north-western coast, also had a railway crossing on the runway but declining rail traffic forced the closure of rail traffic in early 2005, and thus the Wynyard airport rail crossing is no more operational. 
 
At Gisborne, on the other hand, the rail route functions actively and so does the airport everyday between 6:30 in the morning and 8:30 at night. After that, the runway is sealed off till morning. The railway tracks splits the runway almost in the middle and very often trains or aircraft are stopped until one of them moves on. It is a very challenging task for the airport authorities to manage landing at the intersecting runway along the operational rail route which has scheduled departures and arrivals itself.
The airport is a major link to enter the small region of Gisborne and hosts more than 60 domestic flights. More than 150,0000 passengers fly through this airport each year.

source : Amusing Planet