Boyd Cave is a natural lava tube within Deschutes National Forest on the northern flank of Newberry volcano. Located approximately twelve miles southeast of Bend, Boyd Cave is an 1880-foot-long lava tube with well-preserved basalt formations and is reached by a short 0.8-mile out-and-back trail. As you descend into the cave via a metal staircase that goes down into the cave about twenty feet, you will be completely immersed in darkness, so make sure to bring a flashlight or headlamp. The chilly cave is at a constant temperature just below 50 degrees Fahrenheit, so be prepared with a sweater or jacket. Because of animal-borne pathogens and diseases affecting the bat population found in this cave, dogs are not allowed inside Boyd Cave as well as surrounding caves. This is a popular destination for locals and visitors alike and is open year-round.