We hiked up to one of the only volcanoes in the States, in Lassen Volcanic National Park. Ended up at over 10,400 feet above sea level after a 2,000+ foot climb. It was a great 75 degrees up at the peak, but still plenty of snow. The altitude was definitely getting us and we took a lot of time at the top for pictures. Total distance was 4.54 miles and about 3 hours and 35 minutes. Pretty damn exhausting!