In 2011, archaeologists rediscovered an ancient "gate to hell" in the city of Hierapolis, Turkey. This stone doorway leads to a small cave-like grotto and was once thought to be an entrance to the underworld. The gate, also called the Plutonium, sits above a fissure that releases deadly volcanic carbon dioxide (CO2). Visitors to the site in ancient times would see a visible mist of this gas rising from the ground. Even today, the area is dangerous—birds that fly too close to the gate suffocate from the toxic fumes. The city of Hierapolis is just one of many places on Earth where you aren't welcome, but can still check them out in our video. Credit:<br />CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/:<br />King Farouk palace: By Redthunder22, https://commons.wikimedia.org/w/index.php?curid=35558298<br />Niihau helicopter: By Christopher P. Becker, https://commons.wikimedia.org/w/index.php?curid=116402239<br />Erdstall Ratgöbluckn Perg Durchgang: By Pfeifferfranz, https://commons.wikimedia.org/w/index.php?curid=18819687<br />Erdstall Perg: By Pfeifferfranz, https://commons.wikimedia.org/w/index.php?curid=13965248<br />Trca2: By Tomasz Majtyka, https://commons.wikimedia.org/wiki/File:Trca2.ogv<br />CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0:<br />Bhangarh: By Deejayrocks2, https://commons.wikimedia.org/w/index.php?curid=82674759<br />Shirazumori Shrine: By Fred Cherrygarden, https://commons.wikimedia.org/w/index.php?curid=149066912<br />Yawatano-yabusirazu Motoyawata: By しんぎんぐきゃっと, https://commons.wikimedia.org/w/index.php?curid=93493917<br />Blair Witch Project Logo: By Schreibwerkzeug, https://commons.wikimedia.org/w/index.php?curid=56293706<br />GuilfordCT Dudleytown: By Magicpiano, https://commons.wikimedia.org/w/index.php?curid=68150500<br />Erdstall Vorau: By Haweb, https://commons.wikimedia.org/w/index.php?curid=128796249<br />Hermann Schwammenhöfer: By Hermann Schwammenhöfer - https://www.academia.edu/70468036/Hermann_Schwammenh%C3%B6fer_Arch%C3%A4ologische_Denkmale_Weinviertel_Wien_2020_, https://commons.wikimedia.org/w/index.php?curid=130719435<br />FMP - Erdstall: By Wolfgang Sauber, https://commons.wikimedia.org/w/index.php?curid=69517607<br />Bhangarh Fort: By Chainwit., https://commons.wikimedia.org/w/index.php?curid=121287181<br />The Plutonium: By Carole Raddato, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, https://flic.kr/p/Q35dZY<br />Erdstall waagrechter schlupf: By Josef Weichenberger, GFDL, https://commons.wikimedia.org/w/index.php?curid=29649747<br />Animation is created by Bright Side.<br /><br />----------------------------------------------------------------------------------------<br />Music from TheSoul Sound: https://thesoul-sound.com/<br /> <br />Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/0hUkPxD34jRLrMrJux4VxV<br /> <br />Subscribe to Bright Side: https://goo.gl/rQTJZz<br />----------------------------------------------------------------------------------------<br />Our Social Media:<br />Facebook: https://www.facebook.com/brightside<br />Instagram: https://www.instagram.com/brightside.official<br />TikTok: https://www.tiktok.com/@brightside.official?lang=en<br /> <br />Stock materials (photos, footages and other):<br />https://www.depositphotos.com<br />https://www.shutterstock.com<br />https://www.eastnews.ru<br />----------------------------------------------------------------------------------------<br /> For more videos and articles visit:<br />http://www.brightside.me<br /> ----------------------------------------------------------------------------------------<br />This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.
