this waterfall... you can feel it on your face and hands. this is an incredible wonder of nature. you have to come and see this sometime in your life. wow! next, we join the husband—and—wife team jason and tammi on an incredible zero carbon adventure around wales, and so far they have completed almost 400 miles over hills and valleys under their own steam. now, it's time for them to tackle the spectacular and sometimes precarious welsh coastline in a boat powered just by pedal. we are on a circumnavigation