Complete the following sentence: From its confluence the river loops through a ravine around the base of a hill on which is the ruins of the Morrish castle of Aljezur (). Complete the following sentence: From its confluence the river loops through a ravine around the base of a hill on which is the ruins of the Morrish castle of Aljezur (). The Moors constructed a port at the base of the castle and made the river navigable out to the ocean at Amoreira.<unk> The Moors constructed a port at the base of the castle and made the river navigable out to the ocean at Amoreira. •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1755 earthquake.