He was in search of a great golden city at the headwaters of the Caroní River. A year later he explored what is now Guyana and eastern Venezuela in search of "Manoa", the legendary city of the king known as El Dorado. Raleigh described the city of El Dorado as being located on Lake Parime far up the Orinoco River in Guyana. Much of his exploration is documented in his books The Discoverie of the Large, Rich, and Bewtiful Empyre of Guiana, published first in 1596, and The Discovery of Guiana, and the Journal of the Second Voyage Thereto, published in 1606. After the publication of Raleigh's accounts, several other European powers developed interest in the Guianas. The Dutch joined in the exploration of the Guianas before the end of the century. Between the start of the Dutch Revolt in 1568 and 1648, when the Treaty of Münster was signed with the Spanish, the Dutch cobbled together different ethnicities and tribes and religious faiths into a viable economic entity. When beginning an empire, the Dutch concerned themselves more with trade and establishing viable networks and outposts than with claiming tracts of land to act as a buffer against neighbouring states. With this goal in mind, the Dutch dispatched explorer Jacob Cornelisz to survey the area in 1597. His clerk, Adriaen Cabeliau, related the voyage of Cornelisz and his survey of Indian groups and areas of potential trade partnerships in his diary. Throughout the seventeenth century, the Dutch made gains by establishing trading colonies and outposts in the region and in the neighboring Caribbean islands under the banner of the Dutch West India Company. The company, established in 1621 for such purposes, benefited from a larger investment of capital than the English, primarily through foreign investors like Isaac de Pinto, a Portuguese Jew. The area was also cursorily explored by Amerigo Vespucci and Vasco Núñez de Balboa, and in 1608 the Grand Duchy of Tuscany also organized an expedition to the Guianas, but this was cut short by the untimely death of the Grand Duke. English and Dutch settlers were regularly harassed by the Spanish and Portuguese, who viewed settlement of the area as a violation of the Treaty of Tordesillas. In 1613, Dutch trading posts on the Essequibo and Corantijn Rivers were completely destroyed by Spanish troops. The troops had been sent into the Guianas from neighboring Venezuela under the