A Sumerian paradise is usually associated with the Dilmun civilization of Eastern Arabia. Sir Henry Rawlinson first suggested the geographical location of Dilmun was in Bahrain in 1880.[2] This theory was later promoted by Frederich Delitzsch in his book Wo lag das Paradies in 1881, suggesting that it was at the head of the Persian Gulf.[3] Various other theories have been put forward on this theme. Dilmun is first mentioned in association with Kur (mountain) and this is particularly problematic as Bahrain is very flat, having a highest prominence of only 134 metres (440 ft) elevation.[2] Also, in the early epic Enmerkar and the Lord of Aratta, the construction of the ziggurats in Uruk and Eridu are described as taking place in a world "before Dilmun had yet been settled".