This underground mine in Poland is home to a cathedral and 40 chapels

[Michie]

The Wieliczka Salt Mine in Krakow, Poland, is a testament to miners' faith.

The city of Krakow, Poland, is probably known to Catholic travelers for sights such as Wawel Cathedral and the John Paul II Family Home Museum. But not many of us may know that one of its most impressive Catholic treasures lies underground.

The chapels of the Wieliczka Salt Mine
For at least 700 years, one the most important salt mines in Europe has been located in Krakow. The Wieliczka Salt Mine has been a key economic force behind Krakow’s expansion. Its shafts and chambers span a whopping 178 miles, and thousands of miners have worked here from its foundation in the 13th century up until 1996.

Continued below.
This underground mine in Poland is home to a cathedral and 40 chapels

 

[Gnarwhal]

A glimpse of the past that's showing us our future, perhaps?

 

[Bob Crowley]

There's an underground church (or churches) in a opal mining town called Coober Pedy in South Australia.

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As the article states, it gets very hot in summer, and most of the town is underground. It's also very dry and only gets about 6 inches of rain a year. They get their water from an artesian bore when is then desalinated and purified.

Water & Waste Water Service.

 

[anna ~ grace]

It’s gorgeous… it’s underground and it’s beautiful.

 

[Michie]

It’s gorgeous… it’s underground and it’s beautiful.

I thought so too.

 

[BrAndreyu]

That's one of the coolest things I've ever seen. I wish that I could go to mass there.

 

[Bob Crowley]

Apparently there are five underground churches in Coober Pedy. The following website is an advert for a caravan park chain, but they've got the list.

Underground Churches | BIG4 Stuart Range Outback Resort | BIG4

The Serbian Orthodox Church seems to be the best with the Catholic Church the runner up.

https://www.tripadvisor.com.au/Attr...holic_Church-Coober_Pedy_South_Australia.html