There is actually a volcano here in Texas. There are actually about 75 volcanos in Texas. Pilot Knob is located about 8 miles south of Austin, near the airport. It is the largest of the Texas volcanos, it has a diameter of over 2 miles.  Like the rest of the volcanos in Texas, Pilot Knob is extinct. In fact, it hasn't erupted in nearly 3 million years. You can however hike the rocky trails around it and imagine the hot red lava streaming down the sides.                                                   Pilot knob is listed as being one of the best hikes in Texas.  Texas is full of so many adventures, you don't even have to leave the state to go on vacation. Many Texas beaches were formed by volcanic activity.