This finger of rock standing out from the granite face was at one time considered "unclimbable." A first ascent was made by throwing a rope across from the main cliff and using it to assist the climber. In proper climbing circles this is considered blatant cheating.
In 1946, John Salathe and Ax Nelson began a proper climb from the base of the Arrow and in three days, John became the first to make the ascent. To give you a sense of the difficulty of the climb, the distance between the tip of the Arrow and the main cliff to the right is 150 feet!