The Cameron Peak fire burn scar reaches the shoreline of Chambers Lake, at the headwaters of the Cache la Poudre River, west of Fort Collins, Colorado, U.S., June 3, 2021. Huge forest fires last year denuded vast areas of Colorado’s mountains and left them covered in ash – ash that with sediment has since been washed by rains into the Cache la Poudre River. Picture taken June 3, 2021. REUTERS/Forrest Czarnecki