The following sources were consulted in the preparation of the article “10 of the world’s freakiest places.”
Kasperoviczus, K. N., & Almeida-Santos, S. M. de. (2012). Instituto Butantan e a jararaca-ilhoa: Cem anos de história, mitos e ciência. Cadernos de História da Ciência, 8(2), 255–273.Butantan Institute article (Biblioteca Digital Butantan)
Uspenskij, P. S., & Carikaeva, Z. H.-M. (2023). Investigations at the Dargavs burial ground in Prigorodnyi District of North Ossetia-Alania in 2019. History, Archeology and Ethnography of the Caucasus, 19(4), 1137–1160.
Dargavs archaeological study (Caucasus History)
Pennsylvania Department of Environmental Protection. (n.d.). Centralia mine fire resources: Chronology. Commonwealth of Pennsylvania.
Pennsylvania DEP, Centralia Mine Fire chronology (Pennsylvania Government)
Pennsylvania Department of Environmental Protection. (n.d.). Centralia mine fire resources. Commonwealth of Pennsylvania.
Pennsylvania DEP, Centralia Mine Fire resources (Pennsylvania Government)
Black, R. (2013, October 3). “Lake that turns animals to stone” not so deadly as photos suggest. National Geographic.
National Geographic, Lake Natron (National Geographic)
Langley, L. (2013, October 3). Unusual pictures: “Calcified” birds, bats found at African lake. National Geographic.
National Geographic, Calcified birds and bats (National Geographic)
Catacombe dei Cappuccini di Palermo. (n.d.). Origini delle Catacombe dei Cappuccini.
Capuchin Catacombs, Origins (Catacombe di Palermo)
Poveglia per tutti. (n.d.). Frequently asked questions.
Poveglia per tutti, FAQ (Poveglia per Tutti)
Valverde, A., Irakulis-Loitxate, I., Roger, J., & Guanter, L. (2026). Satellite-based assessment of methane emissions from the Darvaza gas crater. Geophysical Research Letters.
Wiley Online Library, Darvaza Gas Crater study (AGU Journals)
Somvichian-Clausen, A. (2017, October 10). Life-size dolls have taken over this near-deserted town. National Geographic.
National Geographic, Nagoro Doll Village (National Geographic)
Sedlec. (n.d.). Ossuary history.
Sedlec Ossuary, History (Sedlec)
Philippine Department of Tourism. (n.d.). Mountain Province. Love the Philippines.
Department of Tourism, Mountain Province (tourism.gov.ph)