Bike Park school helps you get started Ylläs Bike Park School serves both beginners and more experienced downhill bikers who want to achieve the perfect technique. Our modern equipment and safety gear guarantee a pleasant and memorable experience at Finland’s largest bike park! Downhill biking is a fun, fast-paced activity that can be challenging in a fell setting. Learning the basics with a teacher is much easier and nicer than alone. We offer both courses and private lessons.