The Paulina Plunge Downhill Waterfall Mt. Bike Tour is a wet and wild family adventure for all riders with a minimum 26-inch inseam and 28- inch seat height. We will descend over six miles down a smooth forest trail, where our friendly guides will lead you to six pristine waterfalls and two natural water slides. Exploring this natural water park will be the highlight of your Central Oregon vacation.The Paulina Plunge Downhill Waterfall Mt. Bike Tour is a wet and wild family adventure for all riders with a minimum 26-inch inseam and 28- inch seat height. We will descend over six miles down a smooth forest trail, where our friendly guides will lead you to six pristine waterfalls and two natural water slides. Exploring this natural water park will be the highlight of your Central Oregon vacation.