At daybreak the entire company embarked, and after making prize of a vessel of sixty tons laden principally with wines, landed at the port of Bastimentos.[XXIII‑3] After resting there for two days Drake rejoined his ships at the Isla de Pinos, whence he despatched his brother to explore the river Chagre as far as the town of Cruces, where it will be remembered the treasure trains passed on their way from Panamá to the North Sea. He then proceeded to Cartagena where he captured several Spanish vessels, but finding the town too strongly defended to venture an attack, set sail for the gulf of Urabá. The adventurers landed at a spot remote from the line of travel, and hiding their vessels in a neighboring creek, remained there fifteen days, hoping thus to create among the Spaniards the impression that they had departed from the coast. An expedition was then undertaken to the river Atrato for the purpose of intercepting the canoes, which, after the arrival of the fleet at Cartagena, were sent up the stream, laden with the merchandise of Spain, to return with the gold, silver, and other valuable commodities collected during the year. [Sidenote: THE CIMARRONES HELP THEM.] On the second day of the voyage it was ascertained that the fleet had not yet reached Cartagena; whereupon the English again visited the Isla de Pinos, capturing there vast quantities of provisions, including cassava bread, meal, wine, dried beef, fish, and a plentiful supply of live stock, all intended for the use of the Spanish settlements and for revictualling the fleet.[XXIII‑4] These were secured for future use in storehouses, built many leagues apart. Then under the guidance of cimarrones, who regarded the English as allies against a mutual foe, Drake moved his vessels to a secluded bay amid the Cabezas, a group of thickly wooded islands, near the gulf of San Blas, where the channel was so narrow and difficult that none could enter by night.[XXIII‑5] Here he was free from all danger of surprise. The rainy season had now begun, and during that time the Spaniards did not convey treasure by land. A delay became necessary before any extensive raid could be undertaken, and the men were therefore ordered to erect a fort and buildings suitable for their accommodation and to land their ordnance and provisions.