Excellent. They have HUGE exhaust systems and filtered fresh air ventilation system. From what I've heard, it's really a nice atmosphere down there. 70-degrees, very low humidity and comfortable all year.
Of course, general members of the public aren't allowed past the guard gates. Only people who belong there can get in. Strangely enough, the public can drive right by one of the entrances to the caves, but never even recognize it. There aren't big signs, nothing that makes them stand out other than the guard stations and the large steel doors (or buildings) that form the entrance to the tunnels.
If I didn't point out that this is a limestone cave entrance, you'd never suspect it.
How's the air quality with trucks etc running through all the time?
Excellent. They have HUGE exhaust systems and filtered fresh air ventilation system. From what I've heard, it's really a nice atmosphere down there. 70-degrees, very low humidity and comfortable all year.
Of course, general members of the public aren't allowed past the guard gates. Only people who belong there can get in. Strangely enough, the public can drive right by one of the entrances to the caves, but never even recognize it. There aren't big signs, nothing that makes them stand out other than the guard stations and the large steel doors (or buildings) that form the entrance to the tunnels.
If I didn't point out that this is a limestone cave entrance, you'd never suspect it.