The Cedar River contains valuable crystals that wash down from the nearby mountains during the spring time.  There is a family of Fairies that live close to the river and collect the crystals.  If you are quiet you may be able to locate their house and even spot the fairy owner nearby, please do not try to touch the fairy.  Both are close to each other so you may find either one first.  Sign their house visitor log and take note of the Fairy's clothing, that color is the Fairy's favorite color.  Then use the colors to help you find the Fairy House Crystal Treasure Bonus.  Please be careful with the houses and return gently.