Underhill departed Wyoming .
Underhill went on to California at the invitation of Sierra Club leader Francis P. Farquhar , for the purpose of teaching the most advanced techniques of roped climbing and belaying developed in the Alps .
Departing Wyoming , Underhill went on to California at the invitation of Sierra Club leader Francis P. Farquhar , for the purpose of teaching the most advanced techniques of roped climbing and belaying developed in the Alps .