A magnitude 7.5 earthquake on the Teton Fault could cost more than half a billion dollars and temporarily displace hundreds of households in Jackson Hole, a new report suggests. The fault, which runs 35 miles along the base on the Teton Range, has been "ominously silent" since it last erupted in an earthquake nearly 5,000 years ago, said Wallace Ulrich, a Teton County resident and former state geologist. Most faults in the region undergo an earthquake every 800 to 1,000 years, researchers say. Read more