Fire officials said a campfire that had not been fully extinguished is what started the Interlaken Fire. Read more: https://www.9news.com/article/news/local/wildfire/interlaken-fire-twin-lakes-colorado-latest/73-40c6f4a4-1ea4-4fd9-84a0-a7482f040029 More local videos here: https://youtube.com/@9news Subscribe to NEXT: https://youtube.com/@Nexton9NEWS Stay connected: 9NEWS Website: https://www.9news.com/ Facebook: https://www.facebook.com/ilike9news Twitter: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.