Kawah Ijen is an active volcano in Indonesia. The miners scale 2,600 meters tall (8,660ft) Kawah Ijen volcano trek up to the crater, then down to the shore of a 200-meter-deep crater lake of sulfuric acid, where they retrieve heavy chunks of pure sulfur to carry back to a weighing station. They do all this without any protective masks or gear.
2. In the canals of Xochimico near Mexico City is a bizarre island and what might be the world’s strangest and scariest tourist attraction. However, the sad island was never meant to be a stop on tourists’ holiday itineraries. The Island of the Dolls was dedicated to the lost soul of a poor little girl who met her fate too soon. There are hundreds of dolls that are strung to tree and poles.
3. Mariana Trench in Pacific is currently the deepest known point on earth. It is deeper than average cruising altitude of commercial airliners and harbors some of the strangest life form known to men.
4. More than 500 people have committed suicide in Aokigahara since the 1950s. In 2010, 247 people attempted suicide in the forest. Most people hang themselves or die of an overdose. Due to the density of the forest, the government only cleans up the place once per year. There are several youtube videos, which show people going in to explore and find others who are considering suicide camping in the tents.
5. The Wall in St. Croix is a two-mile straight vertical drop off to the ocean floor. The water is shallow, warm, and perfectly clear as you start out, tiny colorful fish dart about, scattered coral formations dot the ocean floor. Not even a quarter mile from the beach is the wall. The depth is recorded from a mere 1,000 foot drop off to 2 miles straight down. The clear turquoise water shifts to a deep blue for a few feet and then solid black. You are floating directly above a black abyss.
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6Door to Hell
The Derweze area is rich in natural gas. While drilling in 1971, Soviet geologists tapped into a cavern filled with natural gas. The ground beneath the drilling rig collapsed, leaving a large hole with a diameter of 70 meters. To avoid poisonous gas discharge, the best solution decided was to burn it off. They had hoped the fire would use all the fuel in a matter of days, but the gas is still burning today. Locals have dubbed the cavern "The Door to Hell".
7. Poveglia Island in Italy is considered the most haunted location in Italy. In 2007, mass graves were found of bubonic plague victims. In 1922, the existing building was converted in a hospital for mentally ill. According to a local folklore, the treating doctor tortured and butchered many of the patients, before going "mad" and jumping to his death from the bell tower. In 1968, the hospital was closed and the island was completely abandoned.
8. Odessa Catacombs in France run over 2,500 km, and to get a sense of how much tunnel system that really is, it is only 2138 km from Odessa to Paris. Once lost, it is very difficult to find an exit from the maze of dark, unlit tunnels and it is fairly easy to get lost in here. In 2005, a girl got lost while drunk off her head in the Odessa catacombs while partying with some friends. Months later they found her shriveled corpse in one of the tunnels.
9. Gas chambers in Auschwitz also known as the Death Camp was an extermination center created by the Nazis to eliminate the Jews. It was estimated that 2.1 to 2.5 million Jews, Soviet soldiers, Gypsies, and Poles were gassed to death in this place, and their bodies were burned in piles nearby. Tourists who visit the Auschwitz concentration camp are gripped with a sense of despair. Some even break down in tears. There are accounts of people feeling spooked at this place.
10. Ilha da Queimada Grande (Snake Island) in Brazil is an island, which is so densely populated by poisonous snakes the Brazilian Navy has quarantined it and a biologist once said that when on the island you are "never more than three feet from death." For each 5m^2 there are 3 to 8 venomous snakes and the coral snake (considered the most dangerous snake from Brazil) got a little adapted for that island.
Hashima Island in Japan was a mining island that was abandoned in 1974. It was completely evacuated overnight. The rotting remains of everyday items are still scattered around it. You can only get there a certain time of the year, so if you get trapped on that island, may God help you. It's also off the coast of Nagasaki.
12. Mount Huangshan in China is most famous for its beautiful peaks and cliffside paths. There are thousands of hand-cut steps in the stone, stretching for miles and miles and they are just the basic paths. There are more advanced ones, where you got to literally walk on planks while anchored to safety cables.
13. Darien Gap in Panama is an undeveloped swampland that separates Central and Southern America. It is full of plants that can kill you, insects that can kill you and if you think you can avoid them, there are insurgents that kidnap you. They only release you to your family safe on receiving the demanded ransom. It is considered one of the most dangerous places on earth.
14. Bolton Strid in England is the most innocent looking stream but is one of nature’s most deadly booby traps. Though it looks like you could just hop across the rocks if you miss you will die for sure. It packs very rapid currents just a couple of feet below its surface. No one really knows how deep it really is. Nobody who has ever fallen into the Strid has survived. It has a 100% fatality rate.
15. On the Overtoun Bridge of Scotland for some odd reason, dogs leap to their death. When someone takes their dog on that bridge, it tries with all of its might to jump off and kill itself. If it survives the fall, it will get back up, and try to jump off again. Nothing the owner does to restrain their pet seems to stop the dog from trying to kill itself.
The Capuchin Catacombs in Italy display endless rows of preserved corpses and lots of them are small children and babies. The friars who were buried there were part of the Capuchin order, and there's a saying there that translates: “that which you are, we were; that which we are, you shall be.” They weren't scared at all of their deaths, they just accepted the cycle of life. The catacombs are decorated with their bones to sort of symbolizing how humble they were and how they submitted to a higher power.
17. The Gates of Hell in New Jersey is a legendary passageway that leads to a network of underground tunnels and storm sewers, and some say to the lair of the evil one himself. It is a very old tunnel with an arched stone ceiling about eight feet high. Generations of local teenagers have told stories of what lay deep inside these darkened corridors, and have dared each other to venture forth. There are local folklores that red-eyed mike guards the gates to hell and that the portal to hell is down in the groove.
18. Port Moresby in Papua New Guinea is listed as one of the world's most dangerous places and the least desirable place on earth by The Economist magazine. Theft, rape, murders and auto theft is rampant on a daily basis, and it is also recommended not to use public transportation. Beside all these concerns, the entire area is prone to seismic activities, landslides, and tsunamis.
19. Corryvreckan Maelstrom in Scotland is very powerful permanent whirlpool just off the coast of Scotland. Complex tidal forces and the unique geological formation combine to create an incredibly powerful, perpetually spinning whirlpool of death. A documentary team once equipped a mannequin with a life jacket and a depth gauge and then tossed it into the Corryvreckan. When it was eventually found, the depth gauge had a maximum reading of over 650 feet and it was severely damaged.
20. The Boiling Lake in Dominica is 200 feet wide and boils 24x7. Temperatures reach 197ºF (82-91.5ºC) on the edges. No one has ever dared to measure its temperature at the center where the water actually boils. Yes, laser thermometer is an option, but the lake is located on an island and its residents are incredibly poor. On top of that, the trek up to the boiling lake is arduous at best. Amateur hikers are told not to attempt it. The approach to the lake is steep and rocks at its edges are very slippery. The last time someone got too close, he fell in and died of his injuries.
Erta Ale in Ethiopia is a continuously erupting volcano in the middle of a desert surrounded by sulfur pits. It has very high temperatures and among native people, it’s infamous for attacking/executing outsiders, including those near Erta Ale.