 Captain James Cook saw Mt . Redoubt during the summer of 1778 , describing it as " emitting a white smoke but no fire " which made some think it was no more than a white thick cloud such as we have frequently seen on the Coast , for the most part appearing on the sides of hills and often extends along a whole range and at different times falls or rises , expands or contracts itself and has a resemblance to Clouds of white smoke . But this besides being too small for one of those clouds , remained as it were fixed in the same spot for the whole time the Mountain was clear which was above 48 hours . " However , several sources call this a " discredited eruption " . There are several other of these activities that are not called eruptions . 
