So we know that a thriving culture existed around 8,000 years ago in the misty, westward islands the Romans were to call Britannia, though some have suggested the occupation was only seasonal, due to the still-cold climate of the glacial period which was slowly coming to an end. As the climate improved, there seems to have been an increase in the number of people moving into Britain from the Continent. They were attracted by its forests, its wild game, abundant rivers and fertile southern plains. An added attraction was its relative isolation, giving protection against the fierce nomadic tribesmen that kept appearing out of the east, forever searching for new hunting grounds and perhaps, people to subjugate and enslave.