User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-23230538-20140909170119

I honestly don't expect the desert to be G-Rank only. None of the previous monster hunter games have ever had an area be G-Rank only like that, but only for smaller areas like the Battle Grounds and the Tower for end game monsters. All the usual areas like the Swamp or Desert have always be accessable by High Rank.

Maybe the translation of this information was incorrect?