An absolute must-do while visiting Boca da Valeria is touring the Valeria River. This is an inexpensive pleasure. Depending upon the operator, five USD will get you a 30 to 60 minute ride. The types of watercraft vary from a canoe to a canopied rowboat. They are all powered by a tiny motor. The six foot driveshaft with a propeller at the end is capable of swiveling 180 degrees. This is perfect to navigate the confined, often weed-choked backwaters.