His mission was to survey the northwest coast of America.
Deposits recording the last 14,000 years at Mount Baker indicate that Mount Baker has not had highly explosive eruptions like those of other volcanoes in the Cascade Volcanic Arc, such as Mount St.
Helens, Mount Meager or Glacier Peak, nor has it erupted frequently.
He chose a route via the Skagit River, but was forced to turn back when local Native Americans refused him passage.
Later that same year, Coleman recruited Whatcom County settlers Edward Eldridge, John Bennett and John Tennant to aid him in his second attempt to scale the mountain.
From about 900,000 years ago to the present, numerous andesitic volcanic centers in the area have come and disappeared through glacial erosion.