3. Pluto’s Gate, Pamukkale, Turkey

https://www.nbcnews.com/news/all/plutos-gate-hell-uncovered-turkey-flna6c10402149
https://www.atlasobscura.com/places/plutos-gate
https://www.archaeology.org/news/1529-131118-turkey-hierapolis-plutonium-statues
https://www.archaeology.org/news/6385-180216-turkey-plutonium-gas
https://www.archaeology.org/issues/301-1805/world/6530-world-roundup-turkey
https://time.com/5171047/turkey-gate-to-hell-pamukkale-hierapolis/
https://www.archaeology.org/news/1529-131118-turkey-hierapolis-plutonium-sttues

2. Actun Tunichil Muknal Cave, Cayo District, Belize

https://www.newspapers.com/image/542668503/?terms=Actun&match=1
https://www.newspapers.com/image/514220431/?terms=Actun&match=1
https://www.atlasobscura.com/places/the-crystal-maiden-of-the-actun-tunichil-muknal-cave-belize
https://www.smithsonianmag.com/smart-news/you-can-visit-cave-where-mayans-sacrificed-humans-180952359/
https://www.nationalgeographic.com/travel/article/actun-tunichil-muknal-atm-cave-maya?loggedin=true
https://www.bbc.com/travel/article/20120201-journey-into-the-maya-underworld

1.	Bobby Mackey's MACK-ee's Music World, Kentucky, USA

https://books.google.ca/books?id=z4FNCAAAQBAJ&pg=PT4&source=gbs_toc_r&cad=3#v=onepage&q=hell&f=false