The Arch of Aroden is a monolithic arch which stretches hundreds of feet above the 15 miles of the Hespereth Strait linking the Inner Sea to the Arcadian Ocean. Despite the fact that the arch spans two continents, both ends have been a part of the nation of Cheliax since their victories in Garund in 4137 AR. By controlling the arch, Cheliax has the power to effectively shut down all trade and naval traffic in or out of the Inner Sea.