In 1936, Dorothy English and Dr Eric Dark were the first to climb Crater Bluff in the Warrumbungles, which was then known by its older name of Split Rock. Dot climbed in bare feet and, although the pair used ropes, they did not use pitons or rock bolts.The pair were part of a larger expedition, including Marie Byles and another experienced alpine climber, 'Pan' Paszek, but, although Dot had never before climbed using ropes, she was chosen for the difficult climb. Dot and Eric Dark agreed that, due to her agility, Dot would take the lead on vertical parts of the climb but the more-experienced Dark would take the lead on traverses.