Each barrier is a relatively strong currents flowing down like a waterfall, a low level. If you paddle a kayak through without overturning is very good. And staff safety throughout the rafting.
Each cascade has a relatively strong water currents flowing down like a waterfall level as opposed to TIA. If kayaking through without very good upside and that staff take care of security throughout the rafting.
Each islet, is quite strong currents flowing down like waterfalls, low level if, kayaking through. by holding down that is not very good and staff will take care of security, cruise through the islands