Actually, Hadrian is well known for having caused the Scots to create the highlands in order to overcome that wall.
Nah, the Scots didn't create the highlands to look over/overcome the wall.... far from it.
The Ancient Celts created the highlands, and quite by accident, too. The had devised a way of trapping rabbits in their warrens by using inflatable devices made of bullock bladders to block off all exits bar one, into which they'd insert a small terrier and net the hole. When the rabbits tried exiting the warren to escape the dog they'd get caught up in the net, making them easy prey for the awaiting Celts. Trouble was, one day a Celt accidentally over-inflated his device in a deep, deep rabbit warren. It pushed mounds of earth and rock upwards, and thus the highlands were born.
Don't believe me? Well go over there to the Scottish Highlands and take a look at Mount Inflatie and you'll see for yourself. 
Orright, so you mightn't see Mount Inflatie, but nonetheless it's a fantastic place for a holiday... er, vacation for those from the former colony. 
