The name "Gemini Bridges" refers to two natural bridges that have formed over millions of years. The larger of the two bridges has a span of over 100 feet and is 200 feet tall. The smaller bridge is located nearby and has a span of around 50 feet. The bridges are located in a remote area accessible by a dirt road. Drive to the trailhead and hike or bike to the bridges or you can take a guided tour with a local outfitter.