Don't wait!!! Reserve early if you would like to enjoy this very popular and unique experience to ride on large inner tubes through ancient irrigation ditches. This tour is a great adventure for all ages. Tube through miles of ditches, tunnels and flumes. Go through 5 tunnels in total, one about half a mile long. Explore tropical rain forests and lush valleys, see breathtaking ocean and mountain vistas, and swim in a natural swimming hole, conditions permitting.