Bruno Crepaz , Nino Corsi , Walter Mejak and Gregorio Invrea climbed in the Trosan area .
Bruno Crepaz , Nino Corsi , Walter Mejak and Gregorio Invrea did over 20 new ascents including Vay Vay .
Bruno Crepaz , Nino Corsi , Walter Mejak and Gregorio Invrea climbed in the Trosan area and did over 20 new ascents including Vay Vay .