Valid for one month.
Visitors also require evidence of a yellow fever vaccination.
An hour outside the capital is one of the flattest stretches of dirt on the planet, an enormous expanse of cracked earth that looks like it could be the bottom of a dead ocean. This place, the Grand Bara, is flat enough to please the boys at NASA, who chose it as an alternate, albeit untested, landing spot for the Space Shuttle. Years ago, Jacques Cousteau is said to have explored the omnious volcanic inlet called the Goubed. In those murky depths, say local expats, Cousteau found some of the largest and most bizarre sea creatures he had ever seen. Cousteau was so taken aback that he vowed that the footage wouldn't be made public until after his death.