Trowulan site has been suggested it was the site of the eponymous capital city of the Majapahit Empire, which is described by Mpu Prapanca in the 14th-century poem Nagarakretagama and in a 15th-century Chinese source. It was razed due to the invasion of Girindrawardhana to defeat Kertabhumi in 1478. After this event Majapahit's capital moved to Daha (Kediri) .Most of archaeological relics discovered in Trowulan and its vicinity is stored and displayed in Trowulan Museum, located on west side of Segaran pool. Excavations in and around Trowulan have shown that parts of the old settlement still lie buried under several metres of mud and volcanic debris, a result of the frequent eruptions of nearby Mount Kelud, as well as frequent flooding of the Brantas River. Several archaeological ruins lie scattered around Trowulan village. Several are quite damaged, while others have undergone reconstruction. Most are constructed of red brick.The ancient city ruins at Trowulan had been discovered by the 19th century. Sir Thomas Stamford Raffles, Governor-General of the Dutch East Indies from 1811 until 1816 and an indefatigable enthusiast for the island's history, reported the existence of ' ruins of temples.... scattered about the country for many miles '. Much of the region was blanketed with dense teak forest at that time, making detailed survey impossible. Nonetheless, Raffles was so impressed by what he saw that he was later to refer to Trowulan as ' this pride of Java '