On the eastern border are the lake villages, and beyond that the black lands of Mahat.
On the southern border is the Hatmahe Sea.
On the western border is the ocean.
On the northwestern border is the Grey Mist. On the northeastern border is the southern tip of the Kerlra Hal'Gepe mountain range. At the foot of the Kerlra Hal'Gepe are the ruins of an ancient temple. The Rhagepe use this temple to perform, among other sacred things, the Calendar Ceremony.
Since the Gogepe keep no written record, their history is passed down through legend and myth.
Before coming to the Sea of Sand, the Gogepe lived in a place known as the Gopeti Valley (this could have been as early as 10,000BMU). The Gopeti Valley was a rich lush land, and the Gogepe wanted for nothing.
So grateful were the Gogepe towards the gods that they built the temple of Gotepe to worship (around 6000BMU). The gods, pleased with the Gogepe began to visit women with silver eyes in their dreams, imparting secrets with them. The women, they say, were born with silver eyes because they were conceived inside the temple. These women became the Rhagepe.
There are some who believe the temple of Gotepe is actually the same temple ruins the Rhagepe perform the Calendar Ceremony at, and that the Gopeti Valley and the Sea of Sand are one and the same. Other believe the Gopeti Valley is the Middle Sea, which flooded after an earthquake broke the land and the ocean flooded in. This second seems for likely because the Gogepe ever after speak of a great flood the gods sent as punishment for the people forgetting the old ways.
The earliest evidence of the Gogepe tribes living in the Sea of Sand is from around 3000BMU.