Go by bus from Kalush (it runs four times a day) or Broshniv-Osada (it runs twice a day, approximately at 9:00 and 14:00).
Go by car to Broshniv-Osada along the highway H-10 Stryj–Ivano-Frankivsk. In Broshniv-Osada turn to Rozhnyativ direction. Road surface between Yasen village and Osmoloda leaves much to be desired, but still it is possible to cover it by car. You'd better do it before dark.