about two in the
morning
Still the rumbling noises continued . They seemed to meet together and cross the chain of the Andes . Glenarvan returned to the CASUCHA more uneasy than ever , questioning within himself as to the connection between these sounds and the flight of the guanacos . He looked at his watch and found the time was about two in the morning . As he had no certainty , however , of any immediate danger , he did not wake his companions , who were sleeping soundly after their fatigue , and after a little dozed off himself , and slumbered heavily for some hours . All of a sudden a violent crash made him start to his feet . A deafening noise fell on his ear like the roar of artillery .