A day trip to Lone Star Geyser in Yellowstone National Park is a short and pleasant day hike or a fun bike ride, and a great way to spend some time off the beaten path. The path to Lone Star Geyser follows the Firehole River for the five-mile round trip, passing through green meadows and wildflowers that line the trail, an old road now closed to vehicles. Lone Star Geyser erupts about every three hours, with a few smaller, minor eruptions occurring before the major eruption. The major burst can last for up to 3o minutes, and ends in a strong steam phase. When you arrive at the geyser, check the log book to see if anyone recorded any recent eruptions so you'll know when it's likely to blow again, and feel free to enter details about what you see to help other visitors. Continue Reading →