What you need to know about Sri Lanka’s only stargate - Meshaun Journeys
Raja Raja Chola I - New World Encyclopedia
O mistério não resolvido do 'Stargate' do Sri Lanka - BBC Travel
https://www.nps.gov/articles/gila.htm
raja raja chola: Who was Raja Raja Chola? What's the controversy around the great southern king? - The Economic Times (indiatimes.com)
Petra – Wikipédia, a enciclopédia livre (wikipedia.org)
10 monumentos pelo mundo cheios de mistérios não resolvidos (viajali.com.br)
El descubrimiento de la pirámide de Sekhemkhet y su misterioso sarcófago sellado (nationalgeographic.com.es)
Pirâmide de Tireis - Wikiwand
https://wowcappadocia.com/portuguese/tunel-vespasianus-titus-e-caverna-besikli.html
Túnel Vespasianus Titus e Caverna Beşikli (wowcappadocia.com)
The Bridgewater Triangle, Massachusetts' Paranormal Hotspot (allthatsinteresting.com)