Not only does inflowing air affect cave temperature, but it also affects cave humidity. The same study showed that humidity was lower whenever the cave inhaled. Natural cave humidity is probably about 95%-100%. Cold air is usually dry, and when it enters the cave environment and warms it becomes even drier. Some areas showed humidity as low as 60% on days when the cave inhaled. Humidity did not stabilize until the Temple was reached, over 2000 feet into the cave.
If you're planning to travel to Cuba, expect to spend about $45 per day during your trip, according to the travel site Budget Your Trip. Spending a week in Cuba will cost you approximately $315, but with pricey chartered flights averaging $717 per ticket, your grand total will reach an estimated $1,032.
The Cuban Tourist Card allows you to stay in Cuba for 30 days. If you plan to stay longer than 30 days in Cuba you can extend your Cuban Tourist Card at Immigration in Cuba for another 30 days at a cost of 25 CUC. The maximum length of stay in Cuba with a Tourist Card is 60 days.