Quiz: How often does Old Faithful erupt on average in Yellowstone June 9, 2025 by Mira Thorne How often does Old Faithful erupt on average in Yellowstone National Park? Discover more about Yellow Stone National Park at our home page. A) Every 60-110 minutes B) Every 20-30 minutes C) Every 2-3 hours D) Every 12-24 hours Submit Answer
