- jordan
- georgia
- peru
- mongolia
- kazakhstan
- kyrgyzstan
- tajikistan
- turkmenistan
- uzbekistan
- bhutan
- india
- thailand
- cambodia
- spain
- portugal
- morocco
- turkey
- egypt (someday when the dust settles)
- czech republic
- kenya
- uk (not britain tho)
- greece
- denmark
- norway
- finland
- mexico
- maldives
- https://www.momondo.ca/discover/article/secret-underground-cities-in-the-world
- nepal
- kiribati
- iran
- persepolis
- behistun inscription
nov 9 2018 ∞
feb 21 2019 +