Nation Firefighters brave ‘really tough’ conditions at Cameron Peak Fire, the largest wildfire in Colorado history October 21, 2020Jessica Flores, USA TODAYComments Off on Firefighters brave ‘really tough’ conditions at Cameron Peak Fire, the largest wildfire in Colorado history The fire began Aug. 13 on the Arapaho and Roosevelt National Forests near Cameron Pass and Chambers Lake. It was 55% contained as of Wednesday night.