A cave is a natural opening in the ground extending beyond the zone of light and large enough to permit the entry of man. Occurring in a wide variety of rock types and caused by widely differing geological processes, caves range in size from single small rooms to interconnecting passages many miles long.
Cuban passport. Cuban passports are issued to citizens of Cuba to facilitate international travel. They are valid for 6 years from the date of issuance, but have to be extended every 2 years. The cost of this passport is about US$500 (CUC 500) for every two years if one person lives in the United States. Until January 14, 2013, the Cuban government required that all Cuban citizens and foreigners such as foreign students that live in Cuba desiring to leave the country would have to obtain an exit permit (Spanish: Permiso de Salida).
The index ranks the United Kingdom and the U.S. as the two most powerful passports, each allowing access to 147 countries without a passport. Yet, a forged or stolen British passport is the fifth most expensive travel document on the dark net with a maximum price of $3,490, according to Vocativâs findings. The top price for a U.S. passport is $2,057, making it the 13th most expensive. The low-ball price for a U.S. passport is one of the least expensive at $938. There are various reasons a less âpowerfulâ passport is worth more money on the black market, but experts theorize that it could have something to do with the difficulty of forging more intricate passports, or the availability of stolen ones.