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.
Cuba's only mobile phone operator, Cubacel, provides the service of renting SIM cards for tourists to use in their mobile phones, thus providing them with a local mobile phone number while they are in Cuba. The cost of renting a SIM card is 3CUC per day, and to rent a handset costs 6CUC per day. There is no official system for tourists to buy a SIM card in Cuba. If you are using your own handset, it needs to work on the 900MHz frequency band for it to work in Cuba.