High Rock is the land north of Hammerfell, and is very highly under the Empire's grasp, also the oldest structure in existence Adamantine Tower, the tower was there when Aldmer settled the region and inspired almost every race of mer to create a mimicry of it. The Aldmer sooner evolved into the race section known as Mer, meaning it is extinct now and the mer is it's relatives. High Rock is also homed to the Orcs of Orismer, a City state, made by only Orcs.
The most concrete history of High Rock begins with its most well known colonized family; the Aldmer Clan Direnni. Described by A Pocket Guide to the Empire "As an economic and military power, they were formidable enough to pose a threat to the battle-hardened Nords and the nascent Alessian Empire of Cyrodiil. Taking advantage of the internal strife in Skyrim, the Hegemony began taking land north and south of High Rock, claiming portions of Skyrim and present day Hammerfell. At the peak of their power, they controlled nearly a quarter of Tamriel. But they had overextended their reach, and slowly, year by year, they lost all that they had gained, falling back to their fortress in Balfiera, The Adamantine Tower, now called the Direnni Tower.It is believed the Bretons came to power in High Rock not by violence, but by trading and slowly overcoming the Nordic population. The province of High Rock was controlled by the Bretons by the end of the First Era. The Direnni left an impact of the Bretons however, as they left the province split apart into numerous city-states, and they were weak against the other Races of Tamriel. They would not be given peace however, as the Redguard conquest in the 808th year of the First Era caused conflict in settlements along the Iliac Bay. They would have to unite, however, against the Orcs of Orsinium. This fight is known as the Siege of Orsinium, and ends with the destruction of Orsinium. Due to the fall of the Direnni, the Bretons were not heavily affected by the fall of the Cyrodilic Empire, yet did lose some land to Tiber Septim. Still divided, some did unite to try to stop the Camoran Usurper, yet he was not stopped until the Baron of Dwynnen united the citizens of the Iliac Bay against him. The Bretons would not remain united, and went back to fighting one another, and those outside of High Rock, until they had to unite when the Nords reclaimed their land in The War of Bend'r-Mahk, when they fought the Redguards in The War of Betony, and when the Orcs resurrected Orsinium. However they would be united in The Miracle of Peace, also known as the Warp in the West is best described in the book of the same name. "The 'Miracle of Peace', also known as the 'The Warp in the West', is celebrated as the product of the miraculous interventions of Stendarr, Mara, and Akatosh to transform this troublesome region into peaceful, well-governed Imperial counties. The catastrophic destruction of landscape and property and the large loss of life attending upon this miracle is understood to have been 'tragic, and beyond mortal comprehension. This event transformed High Rock from numerous city-states into five kingdoms