Storage in underground mine?

[Doc Foster]

Someone mentioned this to me. Anyone in Pittsburg area use this?
https://bradysbend.com/about-us/
It is an inactive limestone mine. Supposedly they have room for about 1800 cars, trailers, boats, etc. I was told they usually have about 1200 in there each winter. Interesting idea for a climate controlled storage area. They claim it to be constant temp and humidity (like most mines) and also rodent free.

[GetawA-S]

A former coworker stored his prized LaSalle in a salt(!) mine near Kansas City.