world's most dangerous railway tracks

1.Tren a las Nubes-Argentina
The Tren a las Nubes (English: Train to the Clouds) is a tourist train service in Salta Province,
Argentina. The service runs along the eastern part of the Salta–Antofagasta railway line of the Belgrano Railway (also known as the "C-14" line) that connects the Argentine Northwest with the Chilean border in the Andes mountain range, over 4,220 meters (13,850 ft) above mean sea level,the fifth highest railway in the world. Originally built for economic and social reasons, it is now primarily of interest to tourists as a heritage railway, though cheaper tickets are also available for locals to use the train as transport.

The railway line has 29 bridges, 21 tunnels, 13 viaducts, 2 spirals and 2 zigzags.Because of the design decision not to use a rack-and-pinion for traction, the route had to be designed to avoid steep grades.The zigzags allow the train to climb up driving back and forth parallel to the slope of the mountain.

It departs from Salta every Saturday at 07:05, and returns around midnight,though most tourists simply do the 8-hour one-way trip and return by other means. The train is composed of a dining carriage, bar carriage, a first aid area and two passenger carriages with room for 170 people, though this is expected to increase to 400 over time.

Currently, the train leaves Salta station for the 15-hour, 434-kilometer (270 mi) round trip to the Polvorilla viaduct, located 4,220 m (13,850 ft) above sea level.The curved viaduct is 224 m (735 ft) long and 64 m (210 ft) high.Once the train has left Salta, it first enters the Valle de Lerma, and then the Quebrada del Toro, before reaching the puna.There are numerous stops along the way, some with markets selling artisan goods and locals offering regional cuisine.


2.Georgetown Loop Railroad-Colorado
The Georgetown Loop Railroad is a 3 ft (914 mm) narrow gauge United States heritage railroad located in the Rocky Mountains in Clear Creek County, adjacent to Interstate 70 in Colorado.

This tourist train runs between the communities of Georgetown and Silver Plume, a distance of 2 miles (3.2 km). The route is 4.5 miles (7.2 km) long and ascends an elevation of 640 feet (195.1 m) through mountainous terrain along with trestles, cuts, fills, and a grand loop.

The railroad is situated near I-70, with Silver Plume Depot sitting adjacent to the eastbound on-ramp.
Just east of Silver Plume on I-70 there is a parking area named Georgetown Loop Overlook providing scenic views to motorists. The Clear Creek Greenway Trail access road connects Silver Plume Depot, Georgetown Loop Overlook, and the Devil's Gate Station near Georgetown. This trail is accessible to bicyclists and hikers.

History
The Georgetown Loop Railroad was one of Colorado's first visitor attractions. This spectacular stretch of 3 ft (914 mm) narrow gauge railroad was completed in 1884 and considered an engineering marvel for its time. The thriving mining towns of Georgetown and Silver Plume lie 2 miles (3.2 km) apart in the steep, narrow canyon of Clear Creek in the Rocky Mountains west of Denver. Engineers designed a corkscrew route that traveled nearly twice that distance to connect them, slowly gaining more than 600 feet (183 m) in elevation. The route included horseshoe curves, grades of up to 4%, and four bridges across Clear Creek, including the massive Devil's Gate High Bridge.

The Georgetown, Breckenridge, and Leadville Railroad had been formed in 1881 under the Union Pacific Railroad.The Loop portion of the line was the crowning segment of the line, crossing the top of the gorge on a 95-foot (29 m) high trestle.

Originally part of the larger line of the Colorado Central Railroad constructed in the 1870s and 1880s, in the wake of the Colorado Gold Rush, this line was also used extensively during the silver boom of the 1880s to haul silver ore from the mines at Silver Plume. In 1893, the Colorado and Southern Railway took over the line and operated it for passengers and freight until 1938.

Between 1906 and 1918, the Georgetown Loop connected with the Argentine Central Railway in Silver Plume, by which tourists could continue onward to the summit of Mount McClellan. Prior to 1916, the Argentine Central also served several large silver mines on the east side of Argentine Pass.

The line was dismantled in 1939, but was restored in the 1980s to operate during summer months as a tourist railroad, carrying passengers using historic 3 ft (914 mm) narrow gauge steam locomotives.


3.Minamiaso Railway Takamori Line-Japan
The Takamori Line ( Takamori-sen) is a Japanese railway line in Kumamoto Prefecture, between Tateno Station, Minamiaso, and Takamori Station, Takamori. This is the only railway line Minamiaso Railway ( Minamiaso Tetsudo, "South Aso Railway") operates. As the company name suggests, the line traverses the south part of Mount Aso caldera. The line has two stations with very long names, namely Minamiaso Mizu-no-Umareru-Sato Hakusui-Kogen Station and Aso-Shimodajo-Fureai-Onsen Station, the former being the longest in Japan.

History
The entire line was opened by the then Japanese Government Railways in 1928.Freight services ceased in 1984. The third-sector company took over the former JNR line in 1986. The MLIT tested a DMV railbus on the line in November, 2007.

Proposed connection
After the Takachiho line opened in 1972, construction of the 23 km section to Takamori continued until 1975, when flooding in the 6,500 m Takamori tunnel (7 km north of Takamori) resulted in work being suspended. Construction was formally abandoned in 1980.

4.Burma Railway(Death Railway)-Thailand
The Burma Railway, also known as the Death Railway, the Siam–Burma Railway, the Thai–Burma Railway and similar names, was a 415-kilometer (258 mi) railway between Ban Pong, Thailand, and Thanbyuzayat, Burma, built by the Empire of  Japan in 1943 to support its forces in the Burma campaign of World War II. This railway completed the rail link between Bangkok, Thailand, and Rangoon, Burma (now Yangon). The name used by the Japanese Government is
Thai–Men-Rensetsu-Tetsudou , which means Thailand-Myanmar-Link-Railway.

The line was closed in 1947, but the section between Nong Pla Duk and Nam Tok was reopened ten years later.

Between 180,000 and 250,000 Southeast Asian civilian laborers (romusha) and about 61,000 Allied prisoners of war were subjected to forced labor during its construction. About 90,000 civilian laborers and more than 12,000 Allied prisoners died.


5.Kuranda Scenic Railway-Australia
The Kuranda Scenic Railway is the name for the railway line that runs from the coastal city of Cairns, Queensland, Australia, over the Great Dividing Range to the town of Kuranda on the Atherton Tableland. The tourist railway snakes its way up through the Macalister Range on the Cairns-to-Kuranda railway line which is no longer used for regular commuter services, but instead operates as a tourist service, operating every day of the year, except Christmas Day. It passes through the suburbs of Stratford, Freshwater (stopping at Freshwater railway station) and Redlynch before reaching Kuranda. The line is used for some freight services and other passenger services, such as The Savannahlander.The railway is 37 km (23 mi) in length.[1] It takes about one hour and 55 minutes to climb one way including the stop off at the falls.

Attractions
The tropical gardens Kuranda rail station are a well-known attraction in the area. Downhill the line cuts through the Barron Gorge National Park. The tourist train stops at a lookout, with a sweeping view of Barron Falls. A number of smaller waterfalls are passed, including Stoney Creek Falls, just metres from the train. The station is a short walk into town where there is a zoo, markets, art galleries and ethnic Aboriginal crafts. In the zoo, there is the option to hold a koala and feed kangaroos,
a true Australian experience. At the bottom of the mountain, where many people pick up the train,Freshwater railway station has an information center, a gift shop, and a cafe that is inside of an old train carriage. As the train travels up and down, a detailed and informative commentary of the railway's construction is provided.

6.deadly rail pamban rameswaram-india

Pamban Bridge is a railway bridge which connects the town of Rameswaram on Pamban Island to mainland India. Opened on 24 February 1914, it was India's first sea bridge, and was the longest sea bridge in India until the opening of the Bandra-Worli Sea Link in 2010.The rail bridge is, for the most part, a conventional bridge resting on concrete piers, but has a double-leaf bascule section midway, 

which can be raised to let ships and barges pass through. Until 1988, the Pamban bridge was the only surface transport that connected Tamil Nadu's island of Rameswaram to the mainland. In 2018, the bascule of this bridge is damaged. This damage ended the transportation on the bridge.

In 1988, a road bridge was also constructed parallel to the rail bridge. This road bridge is also known as Indira Gandhi Road Bridge.The Pamban Road Bridge connects the National Highway (NH 49) with the Rameswaram island. It stands on the Palk Strait and between the shores of Mandapam (a place on the Indian mainland) and Pamban (one of the fishermen town in Rameswaram island). 

It was inaugurated by former Indian Prime Minister Rajiv Gandhi on 2 October 1988.This 2.345 km long Bridge took close to 14 years to be completed.

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